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Good day Sir!! I'm a grade 11 student from a science high school in the Philippines, and we have a research project that will require us to use openfoam and an FSI solver. If possible, we would like to get your contact as we would like to learn more and how to perform our study. By the way, our study is the simulation of a marine biomimicry energy generator. Thanks in advance!

@TorstenSchenkel2110 Thanks for the informative reply. I’m also trying to install swak4Foam on OpenFOAM v2312 in a cluster environment and followed the process with hg update development. However, I’m facing errors during compilation, specifically related to clock skew and parser library issues. Do you have any advice for troubleshooting in a cluster setup? I’ve tried syncing the system clock and loading different dependencies, but still hitting roadblocks. Any help would be greatly appreciated!

Note: given the aggressive ad-insertion on TH-cam, I cannot use it in class anymore. Therefore there won't be any new teaching material posted here. I am sad that it has to be this way, and that some of the series I started need to remain incomplete. I may start publishing these again on another platform, but for the time being my videos will have to remain on our university platform.

Note: given the aggressive ad-insertion on TH-cam, I cannot use it in class anymore. Therefore there won't be any new teaching material posted here. I am sad that it has to be this way, and that some of the series I started need to remain incomplete. I may start publishing these again on another platform, but for the time being my videos will have to remain on our university platform.

Note: given the aggressive ad-insertion on TH-cam, I cannot use it in class anymore. Therefore there won't be any new teaching material posted here. I am sad that it has to be this way, and that some of the series I started need to remain incomplete. I may start publishing these again on another platform, but for the time being my videos will have to remain on our university platform.

Note: given the aggressive ad-insertion on TH-cam, I cannot use it in class anymore. Therefore there won't be any new teaching material posted here. I am sad that it has to be this way, and that some of the series I started need to remain incomplete. I may start publishing these again on another platform, but for the time being my videos will have to remain on our university platform.

Note: given the aggressive ad-insertion on TH-cam, I cannot use it in class anymore. Therefore there won't be any new teaching material posted here. I am sad that it has to be this way, and that some of the series I started need to remain incomplete. I may start publishing these again on another platform, but for the time being my videos will have to remain on our university platform.

I am having trouble about installing paraview: all things go fluently without any error or warning during installation, but when I type in paraview in command line and enter, it returns that: QStandardPaths: wrong permissions on runtime directory /run/user/1000/, 0755 instead of 0700 : CommandLine Error: Option 'simd-mode' registered more than once! LLVM ERROR: inconsistency in registered CommandLine options I am using WSL 2 Ubuntu-22.04. How can I fix this error?

Hi mr Torsten, for some reason ccx_preCICE is not created, rest all is. Can you tell me what might be the reason?

Hi professor, I would like to thank you for this well explained video tutorial. I am following your tutorial from the beginning. However, I can't find my openfoam folder in my home directory. I am a new user and maybe that's why I am asking this silly question. I will be grateful if you answer.

Thanks you very much, it was very useful.

thanks!

Many thanks

Thank you!

Hi! Great video! But I have a question, would this work for analyzing an underwater pipe that is flooded//not flooded? In this case I would like to understand the collapse under water pressure.

Hello Thank you for your video. Is there a way to convert icem mesh to calculix?

Dear Professor, When running the two solvers in two different terminals, I get the following error on the fluid case's terminal: ---[precice] ERROR: Receive using sockets failed with system error: read: End of file And solid case's terminal says: ---[precice] Slaves are connected Killed Help needed here, please. I have done all the steps before this phase, as mentioned in the series.

You setup for the mesh of solidShell.inp and later work with tube.inp. Why is that ?? Please explain, Professor.

Thanks for the helpful video! I watched the series twice but I still met the following error in Openfoam. I believe that the first time step converges successfully but the second time step crushes from Calculix. al = 9.1622847827027e-09, No Iterations 1 time step continuity errors : sum local = 1.2442274796364e-11, global = 8.2784398132393e-13, cumulative = 5.9105689620914e-07 PIMPLE: converged in 49 iterations ExecutionTime = 21.8 s ClockTime = 30 s ---[precice] Mapping "Force" conservative from "Fluid-Mesh-Faces" (ID 1) to "Solid-Mesh" (ID 2) for dimension 0 with polynomial set to separate ---[precice] Mapping "Force" conservative from "Fluid-Mesh-Faces" (ID 1) to "Solid-Mesh" (ID 2) for dimension 1 with polynomial set to separate ---[precice] Mapping "Force" conservative from "Fluid-Mesh-Faces" (ID 1) to "Solid-Mesh" (ID 2) for dimension 2 with polynomial set to separate ---[precice] ERROR: Receiving data from another participant (using sockets) failed with a system error: read: End of file. This often means that the other participant exited with an error (look there).

How install RCall un Julia and correct the error of the "Base.incluide(Main,...?

Thank you for the helpfull video. Can you please provide a refernce to Lee 2012 benchmark? Thanks

Hello sir. I am not one your student but i find the tutorial interesting. However there is something that I don't understand : at the end of the second video, when you export for the first time, we have two entities (pipe and solidshell) but in this third video, there is a third entity called interface.stl_1 that you never mentionned before. Moreover you exported the fluid mesh as pipe.unv and in the 4th video it is named Fluid.unv, and when I use ideastofoam and checkMesh, my mesh is twice smaller as yours. My theory is that (pipe.unv + interface.stl_1)=Fluid.unv. With this problem, when i try to run the simulation the divergence appears way too early and results are not usable. Could you please help me understand what you did with interface.stl_1, and if you think i am missing something else please tell me Anyway thank you for your job

Thank you! Extremely helpful!

Thanks a lot. The only video that actually helps to install Paraview using only terminal.

The quality of the video is not good and nothing is appeared. Thanks anyway.

Sir, where do you set the hemodynamic parameters like OSI, TAWSS etc? You have shown these parameters in Paraview under the post-processing video. That's why asking you.

OMG, I was searching for these tutorials from last year. Finally, I got your channel. Actually, I am working on coronary hemodynamics but it Looks like it will be helpful for me. Thanks a lot, sir for covering such a great topic.

Salome has plugin for smooth particle hydrodynamics of gpusph can you tell me how to do this

Hi Torsten, Thanks for such a good tutorial. Well, I am encountering an issue at 16:15 sec as I could not find cxx_precice file in the folder (e.g CalculiX/calculix-adapter-master/bin). This folder includes just one file named ccx_2.20. In addition, as I go for cd .local/bin, I encountered the error at 17:20 sec (cd: no such file or directory: .local/bin). Can you please figure out these errors?

Is it necessary to add Julia to path If not, why did you add it

Really great demonstration! I learned a lot from this video and had an overall idea of what to do in ICEM. Highly appreciated.

Excellent explanations, thanks!

tee: Allwmake.log: Permission denied Building the OpenFOAM-preCICE adapter... got this while running ./Allwmake

I have send a e-mail to you, please check! thanks!

I follow the same step that demos in the video, but it will dissipate at 1.5 ms. May I ask you how to change the boundary condition that it will dissipate at 8 ms?

so much clarity in your tutorials. I appreciate your work

thanks for your instructive video, I don't know why the swak4Foam cannot compile with the OpenFoam2112(patch=OpenFoam2206) in my Ubuntu20. i just knew the version requirement is restricted between them. could u tell me how the swak4Foam compile with the OpenFoam2112(patch=OpenFoam2206)? why it could compile with your OpenFoam2106 just few installation steps? Thanks so much.

Hi Were you able to adjust boundary conditions to stop the case from diverging? Mine diverges at exactly 0.0101 second

Thanks for your sharing. These videos are helpful for me. But some problems occurred when I set up cases according to you. Although "send inlet abq nam" and " send outlet abq nam " work, there are not data in files inlet.nam and outlet.nam. I'd like to know why it happened.

Hello Thank you for your video. Is there a way to convert the .inp to .nam files without using cgx? I am doing all of the case set up on a cluster and cannot use cgx.

many thanks for explanation and providing this video 🌹

can i use it for blood vessel too? how come?

Dear Dr Torsten, thank you very much for this videos.

That's exactly what I need. Thank you. Greetings from Polish guy in Sydney :)

Extremely helpful video series, especially since there is not much in the way of tutorials for beginners wanting to get started in FSI in OpenFOAM/ Calculix. Thanks.

Hello Your videos are extremely helpful Thank you!🌹 Will you be uploading a video on case set up using freeCAD to use with Calculix? If I copy just the inp file to a solid-Calculix folder will that do? Or do I need other mesh files because I do not see them generate with freeCAD. I am running freeCAD on windows and want to run cases on a cluster Would appreciate your help!

great tutorial. can I get the raw data?

Thanks for your video. Could you teach me how to install dealii and dealii-adapter in the ubuntu systerm through a video. I've tried several times, but there are always some problems.

When redirecting the output to log files, you may want to add a 2>&1 at the end of the line (before the &) to also get any error messages in the same log (> only redirects the info stream, leaving the error stream on the screen). Instead of redirecting, you can also use "| tee example.log" to get output both on your screen and the log file (probably irrelevant for the cluster).

this is exactly what I want. thank you for this whole series.