Everybody welcome to the fire science show today. Broadcasting from Brno in Czech Republic. Together with my friends and colleagues. Douglas Kresky. At fam tech conference aggregators.
Hello, welcome everybody.
Great to have you in the show and, uh, We came here. we We're having a local tourne hour around Europe sharing the preliminary research of our new, fascinating project. And we thought that it may be great to share it. With you, what do you think Chickasha?
I think it's. Generally a great idea because it's project starts three years, so he's fine. A moment to show it to the
I usually have said that it's like, it's going Like scheduled rides. It's not that we've spent like three years building. it now, actually, actually we did, but we're very happy to. Have completed stage one or something that we call stage one of the project. It was a big, big advancement in, building a new facility for small controlling in corridors. The project name is Jaeger's we're horrible at naming projects.
But it's an official name. We'd have to find out something new.
Yeah. Well, if just someone in the audience has a proposal, how to call the sexy project, please let us know because we certainly fail at doing that. Unfortunately. Anyway, uh, The project is on the smoke control in corridors. And I think it's a really interesting. A topic that's very, very worthy of. Investigation. And. It's something that consists of two separate parts parts. One would be in the new, how we call it next generation experimental facility for. Investigation of smoke controls.
And this is something that Jaeger's was leading for the last three years. And part two is something that was more on my shoulders, which is the digital twin of this facility, which is a fancy name for a numerical Simulator of the exact same experiments we do in the facility. I want to say is an ethics degeneration and experimental facility for investigation of smoke control. Doesn't really give you an impression of what it is. So it's all jokes.
Please tell the listeners what we have actually built in punky.
we built 40 meters long corridor with height of three meters and variable. or floor. So it's a very fixable. the white of corridor is 1.4 meters and to corridor is. equipped with fully flexible ventilation system. system, which allows us to test. Probably most of possible ventilation combinations.
It's kind of interesting when you think about this. It's just a corridor. But the facility like that has, I have never seen a thing like that in my life. we've always only seen the research and the corridors. This was done at Hawk at some buildings, and it was just limited, limited, limited studies that just investigated one parameter, two perimeters, or just few parameters. Uh, and here we've built a facility that Is bespoke engineered to really facilitate multiple variants of fire.
Uh, research in it. And, uh, I think it's, it's beautiful because the possibilities are endless for something such as small as. It's just a corridor. Uh, let's talk why we build it. I think I think. And then maybe even more important widen then how we build it. For me, myself. You know, when you look into statistics, when you look into. The main causes of death in fires. Obviously the smoke inhalation always pops up as the, as the number one We. Observe.
deadly fires in residential buildings in which the smoke spreads through evacuation pathways. Uh, has threatened people outside of the, compartment of origin, of the fires. And for me, these are very. Difficult fights, dangerous fires. I mean, if I set the fire in my own. If I'm in my own living room, I guess I can live with that. But if my neighbor does and I'm in danger, this is a pretty bad. Station for myself. So definitely I feel there is a need to. Understand how smoke in the horizontal.
Evacuation roads travel. What's happening with it. And how can we extract it? What. Can we do with it? For you, what was the rationale when you propose to the, this research? What's what's in your mind when you've started pursuing this project.
As you remember. we are, involved in many commissioning testing in residential buildings, in, hotel building some kind of, , public arenas. And there were a lot of corridors. The problem is corridor is dead. It's dramatically small space. So when you've got a fire, The smoke. Jay is spreading so quickly along the corridor. That's the time for evacuation and, to, for, firefighters. Um, is going to be, to be very sure. So I think that was the main reason why I decided to take care about the topic.
And the second part was the cooperation with the pressure differential system. So, so I found it think it was the main reason I sent it to is connected with my muster science.
Yeah, that's cool. I think the interaction between Is something we very, very rarely. understand well, if we, even the revenue model that we even readily take that into account. When we design smoke control systems in our buildings and. Certainly. I remember that the time when we were And We had this very, very powerful pressurization systems in the corridors. in the staircases that connected to corridors, we were doing called smoke tests in compartments. Next to that corridor.
We had this very beautiful smoke layer. A good extraction system. Everything was working as it was supposed to. And then bam, someone opens the door, high velocity flow. It gets into the corridor and suddenly don't have a layer everything's mixed around. And I mean, the smoke control was designed as it should. The PDs was designed as it should. It's just, they were not designed It's uh, I think there, the observation is, is very spot
The same thing is happening. on every, every construction workers. mine is working properly, but no money is looking. on that in the overall project. Yes. So, so it works like That last time we were in an office building and it was the same situation. So that's the reason why we are taking care about the topic What we are going to test and what we are going to. From these tests.
And, in, in the sports arenas. The corridors are huge. They can accommodate a lot of smoke, but you've mentioned. In residential buildings. They're like tiny,
Tiny small. So-so the time for, to fulfill with the smoke is very, very short.
Exactly. for, for me also, when we started doing that, because a significant aspect of this. After this project is to be able to simulate different scenarios. And I don't only mean the scenario of operation of the smoke ventilation system. Like the world exhaust capacity we have or where the inlets are located, but you know, the whole. the whole idea of what happens when the fire starts. I remember what that was many, many years ago when I was doing. My master thesis, I was doing a corridor.
In that disease is it's quite funny because at that point I had. Really really low amount of knowledge on smoke control systems because it's, it was not something I would, uh, actively pursue during my studies. I was more interested in detection and suppression. Smoke control is not, not in the focal point back then, which is funny essay. Um, that was smoke control engineer. and. my master thesis, I thought, okay. I'll need to show some simulations.
I wanted to, to show the, the modern tools of fire safety engineering. how they play together. And I was doing a simulation of. a fire in a compartment next to a 30 meter corridor. Surprise surprise the same way we just built. Uh, what the Kings students and, Yeah. And in, in that simulations, It's just, you know, started the fire in the compartment. I opened the door to the corridor. The smoke flows to the corridor and.
There's nothing I can tell you that It just feels my corridor like completely. I have like one minute of evacuation time. There's no, there's literally no, nothing I can do about it. I increase the smoke system capacity. Doesn't help. I put more in this doesn't really help. I then approached you at one of the senior colleagues. I showed them my CFD and say, You see, I have a problem. It doesn't work. And he's like, yeah, obviously it doesn't work. You didn't shut the door.
And I'm like, oh, That's how you do that. I found it really Grazie that. the scenario of the system in this case, shutting the door after some time was the only way I could prove the system is working. And I don't think I proved the system is work. I proved. That by shutting the door. I don't have smoke on my corridor anymore. And the more I've worked with this solutions. The the more I observed. In a way it is reality of the design.
And this is exactly that what you said yesterday during her presentation. If you, you just have to be a smart, smart engineer. Yes. You are closing the door and see your system is working properly. because you don't have. any source of smoking. And heat
And, As we were starting the project as we were building our knowledge. on the context of the systems that we want to investigate. I guess we very quickly realized that this scenario on how you model, how you test, how you validate your solution. Is very. Conscious specific, like in Poland, we do it in a certain In the UK, they do it in a completely different way in Germany. They do it in a different way. In many of these cases, you either have a prescribed.
He released rates, smoke, suit, yield, and other parameters of your fire that you want to model. And based on these parameters, you have some acceptance criteria to which you refer, and then you say your system works. In the UK. I believe they, they had this funny scenarios where they shut the doors and open the doors.
Right. In that point, we are very thankful to track on the Wallace who explain us how the. UK British tonight are working with opening and closing the doors on their timeline. But Coming back to your sentence, which you said. There is a lack of information about that. What is happening in a full-scale corridor? Yes. At the beginning of the project, we're thinking of making some kind of a scale model. . But to. When we started to read the literature, the lack of information was so big.
There is a one big black hole about in that topic. So the last tests were made, I think, 20 years ago or more. So that's why we decided to extend the project and to make the full scale corridor. And that's what we have now, after the first test, the results Totally different than, than we expected at the
Yeah, I think it was a good idea too, to make it full-scale. I mean, it's going to be easier to publish and all right. Maybe it makes us, it makes us. Our work as scientists. So much easier when you have full scaling, then I'll have justified the scaling factors. But outside of that, I think it is important to. Establishing new zero. I call it the new north star, you S we have to rely on tricks on scenarios in. Estimating. Smoke control performance.
And I'm not saying we design systems that are bad. That's not necessarily the case. I'm just saying. We designed them in the stupid way where we have no idea what the performance is. We have established some sort of. Tests of. validation method. It's extremely artificial and that, Only informs you of how the system ranks again, this, the test, but it does not inform you on what safety does it provide in a building.
And if you are all into ASET/RSET calculations, if you're all into just fulfilling the standard needs. I guess you can leave with that. If, these standard, if this level of safety. This implicit. Level of safety hidden within these assumptions. If that's what you aim for. Yeah. Cool. You can design it like that. But if you truly want to understand. How your system What do you gain by putting the system? How the system will behave. Your fire scenario is slightly different.
You have no way to know that today with the current models and we don't have good. Experimental proof on how these things work.
This is the point, what you said. Yes. It's time for effort. To come back To the fundamentals of the small problem is just, just want to pick out. Compartment. Adjustment to the corridor. Very simple. It's it looks like a very simple topic. But. as we can see here. She said yes. Because so many variables. which we have to, predict. We have to check how, how system is going to work. We have to, verify and check the environmental conditions in the corridor, which we still accept.
We probably will never have got the perfect conditions. But we have to find the moment when that conditions are acceptable for us. And for people who are, evacuating. during
So, , okay. We have the facility now We, we hope to do this restart to find the new north star of smoke control in corridors. Give you a benchmark against a, the solutions can be tested And we truly hope to achieve that. It's a, ambitious, ambitious goal. Now let's talk about the facility. I mean, yesterday during my talk, there was already a lot of questions. Ask about technical details, how the facility. Whereas, how does it operate? How does it look like?
Um, unfortunately I don't see the pictures, but it does exist. It's it's beautiful. I, we love it. Anyway. Let's let's talk a little about technicalities of what we have built. So you've said it's a 30 meter long corridor, but that doesn't give her the whole story. I stir. Are things. Connected to that. Like first, the compartments.
as what you said, this. Cory door and there are free compartments. Uh, adjustment to that corridor. Each one is free by four meters. floor Aria and hide three meters. So we can. we have got a huge flexibility of locating the fire source. We can look at it in the middle or at the beginning or at the end of the corridor. so. As you can see, we've got just three variables at the beginning. Yes, we can locate the fire inside the corridor. In any position? Where we want.
Additionally, this is the only the geometry Galleria and Another font is he trees rate of the fires. So I think we can multiple every, every possible fire source. We don't have any limitations. So we can make. performance test. Of fire ventilation from the smallest fires to the biggest fires.
Oh, I wouldn't be so open the mode, like a limited, Because, I mean, there's a certain point. which is the facility will be destroyed. And actually we've, we, We have thought about that. and it's, built from Easily fixable materials, almost disposable material. So if we damage it, it's very, very easy to fix it. There's the key fallen gravity Of the, of the facility, , but we are using propane burners with, uh, Heat release rate. We, we do steer that's true.
Mass flow inlet of propane into the burner. We Put multiple burners in the facility. So we also influence somehow the kit release rate per unit area. And, uh, because of that, we really have almost unlimited possibilities to, to test any fires and it's all computer controlled. Right.
Yeah,
We
We can define any. And a fire curve, which we want so-so the fire heat release rate can change in time. As we, as we define it. So. and, At that moment, we have got four burners. So we can even make fire. to up to two megawatts, three megawatts. We.
I think three megawatts. is even more than ventilation controlled for, for the compartments.
but it will destroy the corridor.
I'm a little price to pay for knowledge. this is fire source. Okay. That's a, that's a. important aspect now smoke control systems, because I mean, you can build a building. A corridor is not difficult or impressive on its own. I think I would say the 20% of the struggle with the project was with building the And the rest was waste with the smoke control system suit. So we equipped it with almost anything you can find on the market. Like it Entangled Why ducks and of different smoke control?
our only walls and sitting on the floor. . but the whole magic of the project was the, equipment. Yes. So we. looked, what kind of systems we have tested before. Uh, on that facility, I think we can perform. any test which we can imagine on a market. Yes. So for example, transversal ventilation system. Semi transversal ventilation system, long continuous ventilation system. we can, additionally, we can. Change the way, how we supply or exhaust the air from the corridor, it can be natural.
supply. So. There are unlimited possibilities, which we can make on that facility.
And that there was a point too, to have ability to retest. Uh, whatever solutions are used in the world. And, It's obviously all computer controlled, just like the burner. So. With the click of a mouse, you can. Turn the longitudinal system into transversal system and change the capacities and stuff like that.
And this is the second advantage of that. project. Is that, that we can control everything. And everything is registered only in one file. So it's synchronized. So you can see the temperatures. and the level on the edge of the ventilators while working, we did numbers are open. What was the gas flow in on the regulators? So we have. I've got everything in one file Synchronized. So it's very easy to. repeat every test with the same, input parameters.
So I hope in your head to your building. Image of this magnificent facility, probably the image you build is more beautiful than that. Facility itself. It is. It is really impressive on what can be done in here. And now in important broad custom message to any one of you listening. If, if you are intrigued with what we have. If you like what we have, and you have an idea on how to use it to enhance your own research, like. Please, please just contact us.
I mean, we're, , We are fueled by collaboration. We believe in collaborative nature of science. I don't like individualism in science. I like collaborations. So if you have a better idea on how to use it than us, Please let us know. and we'll, we'll try to do it. The beauty of the facility is that. it took three years to build, but now to set up an experiment, it's like few hours in one day. Literally in the first day of burning. It was amazing.
We have done how many, these are three, four tests.
Four tests. Yes. We bought, we, we have been changing many times the ventilation system. So. During Quantus you are making 20 tests.
So this is one day of testing. I think. I think it's a first statement. I think we've generated more useful results for validating CFD than I've seen in the literature on this of the subject. Through my entire career. And there was just one day of test. So. The possibilities Are endless and you're all invited to, to participate. We want this to be a living facility. We want this to be yielding. Useful results for, for science, for everyone.
Now we have the. boom, the base. Yes. So we can extend it in every possible way. So any ideas. Just to feel welcome to a contact with. We've asked. so we will try to
And now, As I mentioned, the experimental facilities is just one piece of the puzzle. The second piece is the digital twin, which is a fancy way to call. Uh, let's see if this simulations for the facility. And here, we approached the project the same way as the corridor. We wanted to be modular. We wanted to be a parametric. We wanted to be. Like, able , to verify whatever we need. And. Anyone who's working with CV models.
You probably realize how painful it is to set see if the Moodle and it's even more painful to change something like you want to move your extraction point by one meter. To your left and then eventually it gets into middle of two meshes of LDS. So you have to split There's so many annoying things that can happen when you change. a parameter in your CFD. And that will, because we are talking about. Literally hundreds of barometers, literally. Thousands of possible scenarios to be tested.
There's no way you can program that by hand. It would be too much. So we've approached this in a different way. Some of those similar to, to how we did our top acquisition that I've shown in the past. We have taken, snippets off of the us code to describe parts of the model. Like I have a snippet of the code that. describes the corridor and the compartments. There's a snippet of the code that describes the ventilation systems, fire devices using the cord.
And we're like, every, everything is split into separate snippet. Files. And then I have, we have a parametric scripts. that whenever they are fueled with the list of variables to be investigated, They take the the snippets. That are needed. To, to build this particular case file and they just With the values of That we have defined too. It's a model. I. I mean after two , after it works, I. Just give it lists. Just, I want to have Like FDS simulations of.
Uh, firing room number Number two number three. One megawatt two megawatt, three megawatts. I want a smoke. Extraction. Point three points, five points. We had the capacity Oh, 2, 5, 10 meters per second. Let's hear. And then I just present her and It's me hundreds or thousands of 50. Yes files to describe. The recombination of these variables. Then it automatically sends it Our HPC cluster. And they. And then. a month later we come back. We pick up the results. there's there are.
Our scripts that automatically. The process that. and w we're we're done. I think it's super powerful and especially. That we consider these two things. As. Two parts of one exact thing. Like. You don't see everything from the Experis. Measurements, but if you have validated CFD that. You trust? You can make an experiment. And then use the CFD. To understand more
especially what you did We designed that fascinating. And before. We build it and. Heads. The idea how it is going to work. Eh, we did plenty of CFD calculations. At the beginning, it was about 700. CFD calculations. To predict what is going to happen during the tests? And it was our input data to design that facility. . and to find out the experimental part Of the topic.
Yeah. so it's really both things fuel. on each other. Both things are very interconnected. and definitely experiments are the number one thing we want to do. We want to find experimental proof for various smoke control and performance in corridors. We want to have. experimental proof on what really happens in the corridors. That's the number one But thanks to digital twin, we can easily enhance that knowledge with with much more data points. That. we would not be able to find otherwise.
And we knew how to design it and now we can validate it, having the final data from, from the experiment.
Oh Yeah, that's that's cool. Let's talk about validation. Good idea. We have performance as mentioned so far, 13 experiments. I
14 experiments, but with many variables, Between. in each experiment,
Yes. Just to take us to an experiment like. Let let let's talk about the ones with variable. He truly straights. What are we changing? How do we do that?
at the beginning. increment. very simple test to. just a constant It treats rates 100 kilowatts per one hour, just to check what is going. on with our. a facility. is Because we are not able to predict. If it We'll stay alive after one test. So. Until now? yes. So first we started from the steady state fires lasting one hour, half an hour until we have. got. steady state conditions. And later we started to change. He trees red during the tests. after every five minutes.
we were increasing the Patrice rate. starting from 50. Kilowatts up to 500 kilowatts. and then decrease down, just looking what is happening with. The temperatures. along the corridor.
Yeah. It's on the plus it looks like. Uh, pyramid with the steps that, it's gross. then stays stable for like five minutes and grows again and again, and
again. . Wojciech Wegrzynski: But a
yeah, you control. Yeah. but it's a really great too, because it generates you plenty of data to validate. And obviously for this experiments, we have performed. If deal with MDs. Taking just the basic settings of the model, like really. Not playing with anything. Not touching any more advanced settings of the solver. For the smaller fires, we got almost ideal match between the simulations and experiments.
experiments.
For the more complicated cases, especially this style Grow the fires. we've have found some discrepancies. The temperatures in the experiments. Are approximately 50 degrees. Higher than the CFD. Which I mean it's okay. Ish for a first shot, but we're, we're not very happy with it. . we hope to him. prove it, but there's like, we already have good ideas on where to look for, for solutions to that. So overall, over the cause of this 13 simulations.
We already have something like if they did save the model, Yeah.
but
We have a lot of doubts yes. , especially when you are
making a full-scale experiement. . There
are many, many questions. If your, history's rate of fire is. Exactly. That's what you predict at the beginning.
Cause
That's why we are going to make another test in the wrong corner.
To
verify our This rate of the burner. For the career values. Yeah, we, we used to prop in burners with mass flow controllers. That lowest to set any value of propane flow. Into the burner. And with previous experience in open air measurements of these burners, we were quite happy with. How they work, but now as they are in the confined space of the corridor, there are some doubts how this can influence the heat release rate, Actually, Okay. And. And. now Let's move into the future.
How do we see the use of this facility? Like we finished the stage one building starting. We're in the. Final phases of validation of the CFDs. the facility is up and running. The experiments are fairly easy to set up. Of course there are not. without with, without the problems, but everything's manageable. Everything's working. As we expected it to work. Now, where are we going with Jewish?
At this moment, I think we are planning to extend a lot amount of term of couples. to have a more dense greet , of points when we measured the temperature. We are going to add additional thermocouples trees. We are going to add. At the floor and in the ceiling. And At the end of September, we will have, the. possibility to measure the intensity of radiation.
Yeah, I'm also looking into. putting oxygen and measurements into the corridor. to have a better comparison with the CFD. And we've not mentioned that, but we also are measuring the velocities in the smoke layer. In the, in the ceiling jet, which also will be To compare the data we have with, uh, with the CFD, but not only with, with also with sewn models, with outbursts correlations, with the corridor ceiling jet models. Opens quite a lot of possibilities there.
And after we finished our plan of. making The combination of five ventilation. when we have got Heat and smoke in the middle of corridor. We are just relocated the burner And we will start the , real tests of five ventilation system. When we have got the fire Compartment.
including. Uh, shutting the doors at different posts, points of experiment, opening them. Opening the windows in the compartments, changing the size of the Many many variables to play. Right.
Exactly like that. and probably. In the end of this year, we'll have sprinkler systems. So we'll try to make some preliminary tests of how a smoke layer and how temperature field is changing Quinn. Sprinkler system is running.
We also have
Walter Meese 10
Fantastic. Fantastic. I'm looking, I'm looking forward to that. And, How do you see the facility in what? One to three years. Like well, we're, hopefully we won't burn That's like number one thing, but hopefully we can use for something good. What was the craziest piece of research you would like to do on land?
I think we will try to make a big fire as possible. Yes. Especially that we are making the commissioning tests Exactly. I don't know what is the limit? Of five ventilation system. to make the proof that it works properly.
Yeah.
we combine everything together, a sprinkler system, Inflation system detection system. We will try to make the fire scenarios. As flexible as possible is because we are going to. Make some, detection system, which will decide which dam we did not post. It should be open, which samples. Dumpers should be So we are going to do way to some kind of an intelligence system.
I'm also looking forward. To some more in middle next year when we will install the pressurization systems next to the corridor. So we can check the influence on how a quick stream of air changes. The. Buoyancy of the smoke later in the corridor. How do these systems work together? I think there is so much to uncover there. That can influence both the ways, how we design the smoke control but also. the pressurization
And the next problem, which we are going to to check is that because involved in, wind engineering. So, uh, As soon there are windows in rooms, there are , glass parts of the, of the facets, which can just break down. So we are going to check what will happen. If you have got some influence of the wind, which is outside of the corridor. And how it influence on the fire ventilation systems. So, but. it's the topic for next year? I think
so. I think you've already seen some of that accidentally in the experiment. Six. where you had strong winds acting on your natural openings in the. In the corridor And the whole smoke lady was fluctuating. We have this crazy measurements.
Yeah, we have got the big bumping of Temperature. So. do this test. It's not. easy to validate, but it happened. He has because.
I like it. I actually like it because when you pulled the temperature over the FDS simulation, you see the average is matching that just in the real world. cases, the temperatures were going up down 50 degrees when the wind was blowing on the facility and have It's just perfect uniform conditions. It doesn't mean it's useless. I think it's interesting. And. what you said taking wind into account when designing corridors wind-driven fires have been known for ages for decades that.
They are challenged. Devastating. They're deadly. So absolutely. That's a, that's a, something to And do you know Understanding. To what extent wind actually influences the performance of mechanical smoke ventilation. That's something. I don't think we have a good answer yet.
We don't have an answer but as you remember, we were making. A lot of commissioning testing, high-rise building where there was a facade with open windows. And if there was a wind outside , of the building. the five ventilation system didn't work exactly as it was designed. And E. as it was predicted by the. The designer. So that's what we would like to test in next year.
I think, you know, the coolest thing is that. We have this. , body of experience, we have this. The article, Uh, examples or anecdotical proofs of the different planes. You know, you've seen that happen once in a high rise building during commissioning. Well, We don't really have a work worked out. scientifical proof of how it works. We don't have an understanding why. It was like that. And now. we have a full-scale experimental facility that's armed up Measurement systems. That's our top.
Arms up with all the automation that we need. Finally, we can build evidence-based fire science. And I think that makes me the most excited about this project.
Verify what will happen? Depending on the, on direction of the Winchester. The wind speeds. The debt, what we have find out. during the commissioning tests. Then now we try to make it a little bit toward. And to research. And I think it will give us an answer how we should. Design that kind of system to make it fully safety for people.
We need to cut this up. We're going down. I guess we can talk about this possibilities for ages. It's so exciting. you can imagine our state of mind. We've been building this for three In secrecy. we've. been designing this we've been pouring our hearts and, tears. Into into, into building these, there was a lot of pain, including physical pain. There was a lot of work, including heavy physical work. But it looks like it was all worth it.
And. Now to set up an experiment few hours and experiments is set. And one day later you have results that no one ever has seen in the fire science. This is the magic of full-scale. Experimental facilities. Uh, as we said, we are on a to Renee. The Europe. Because she was going to Vilnius for the Baltic fire. Uh,
But starting from Monday, we are going to make another test. So
of course, of course. but, Uh, as we are sharing this. with the world, I'll try to drop some links in the show notes too. The current, presentations about the topic? Uh, I think they Materials will be published on YouTube at some point. And there are definitely available to anyone that registered to the conference. So. thanks, Four four openly sharing that at some point I'll I'll drop the links. I'll make sure it's updated. Uh, you can learn more about the facility.
And just, uh, follow us on Twitter. Follow us on, on research gate. You will be sure to find the newest materials related to this project.
So, thank you very much and I hope it will be very useful for all of us all over the world.
Yeah, thanks guys. , thanks for listening. And that was a quick update on our newest. Research and Deaver. The experimental. facility. On small controlling corridors and its digital Uh, thanks for being here with us in the 5 cent show. And now we're going back to enjoy the conference in beautiful Brno in Czech. It's fantastic. happy to see so many. familiar faces in here meet new people.
So yeah, that's it for today's fireside show and see you back next Wednesday where we'll summarize the conference. Because there's many CFD modeling and evacuation modeling updates. that are absolutely worth to share. with all of you. Thank you guys, spice and thanks jiggles.
Thank you very much. Bye-bye.