Hi, I am trying to use TCFD for distributed computing on the high performance computing platform of my own department. This platform uses slurm as the job scheduling system. When I use the command: `srun -n 127 -N 10 -p normal redDyMSolver -rotatingVelocityFields -parallel`, the error shown in the picture occurs.

I am not sure if it is a problem with the high performance computing platform or with TCFD. Can anyone help me?

Or is there any other way for me to perform distributed computing with TCFD on the high performance computing platform?

Axial Turbine Stage - test topic. Axial Turbine Stage CFD. It is hard not to be emotional when seeing an axial turbine stage CFD. The axial turbine stage was our first big CFD project made here at CFDSUPPORT. In a way, it had preset our destiny - turbomachinery simulations. Here is a little example of how now, ten years later, TCAE runs the whole complex process in one command (or click). By TCFD: https://www.cfdsupport.com/axial-turbine-cfd-simulation.html

Hello,

I'm trying for the first time to use the "Add hosts" feature which, if I understand correctly, allows us to use computing cores on machines that are on the same network as ours.
So I try to add a host whose IP is for example 192.168.0.150, whose username is User1 and which has 4 cores. On my machine, for example, I want to allocate 8 cores for the calculation, i.e. a total of 12 cores. Both our machines are Linux machines.
1) I have already sent him my public authentication key id_rsa.pub so that I can connect to it without entering a password with
2) I have already installed on this machine the same version that I use of TCAE (23.03v3)
3) I also run source $HOME/TCAE/TCAE-23.03v3/OpenFOAM-dev/etc/bashrc-release on machine 192.168.0.150
However, on the GUI, the info tells me that the host is not known. What did I miss?

Thanks for your help

In this new version of TCAE 23.03v1, the command mode

echo $OPTION > $TCAEproject/cfdp-command.txt
kill -SIGINT $TCAEpid

doesn't work. I guess due to the several changes in all TCAE project repertories, the file cfdp-command.txt has also change. Probably the name, it format or it location?

Hello everyone,
I'm having a problem with a value (Cp: specific heat) that I want to set as default in all my TCAE projects. For that I modified the file TCAE-23.03v1/TCAE/etc/CAEProcessorDefaults.tcae by adding
Cp "1800_J/(kg.K)"
When I create a new TCAE project, the value of Cp is well defined at 1800 J/kg/K. However, it seems that when through the GUI I set the value to 0

and that I save, restore then check, no error is reported and I can run the simulation without any problem. That's when I looked at the TCAEproject/setup file and I was surprised to see that the heat capacity value was changed to
Cp "1004_J/(kg.K)"
This value corresponds to the air, originally set by default in the CAEProcessorDefaults.tcae configuration file.

So why my value that I set to 1800 J/kg/K was not returned ?

Hello,

I would like to present my current project for further experiments with TCAE and TOPT.

It is a parametric axial fan created in the OpenVSP free parametric CAD primarily used for aviation purposes. It allows controlling the geometry with pre-programmed parameters and their further linking. It can also be controlled by external scripts. All these functions are perfect premises for geometry optimization with our TOPT module.

This model is designed for catalogue-like making of fans for defined conditions. You create a spectrum of axial fan variation and then choose which one suits the best (with consideration on parameters like pressure drop or aerodynamic torque and then fan efficiency calculated from them).

Simplified model will be used in the upcoming TCAE tutorial, where only a few basic blade parameters will be modified. Its main purpose there will be demonstration of the TOPT capabilities and their potential use in industrial design.

Hello everyone,

I have seen that it exists a new option called --apply-diff for the CAEProcessor command. The help just said that it "changes the project setting by specifying the path to the text file with TCAE configuration keywords, which are to be changed." And the example give us only

CAEProcessor --project fan --apply-diff changes.txt --save-as fan-2

But I wonder what is the information and format of this changes.txt file?

Hello everyone,

I have just installed the new version 23.03v1.

I wonder in which cases it is necessary / recommanded / relevant to enable "Use external geometries / meshes (file will not be imported into the project)" in TMESH in this new version 23.03v1 ? I have noticed that in TCAE/tutorials repertory, it is enable only when TOPT is used.

In my case I have got an already meshed geometries from FLUENT but I have seen that it is possible to both enable/disable this feature. But I have encountered some issues when it is disabled. More specificaly, sometimes, when I restore the project, one interface (inlet/outletInterface) disappear.

What do you recommend?

Dear Team, 

I am trying to run a simulation of the FDA Benchmark Blood Pump case with TCAE. I am using my meshes that I have generated by myself (not via TMESH). 

The project case setup seems to be fine, and I get the message "Project Setup OK" upon checking. However, when I start the TCFD run, I get the following error message after a while - 

"--> FOAM FATAL IO ERROR:

Cannot open include file "C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/hi.fun" while reading dictionary "C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/controlDict/functions"

file: C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/controlDict at line 78.

From function static bool Foam::functionEntries::includeEntry::execute(Foam::dictionary&, Foam::Istream&)

in file db/dictionary/functionEntries/includeEntry/includeEntry.C at line 169.

FOAM exiting"

I do not know why this error occurs. Can you please help me out?

If required I can attach the case files as well. 

Thanks and Regards,

Karan H Baliga,

GridPro. 

Dear Team, 

I am trying to run a simulation of the FDA Benchmark Blood Pump case with TCAE. I am using my meshes that I have generated by myself (not via TMESH). 

The project case setup seems to be fine, and I get the message "Project Setup OK" upon checking. However, when I start the TCFD run, I get the following error message after a while - 

"--> FOAM FATAL IO ERROR:

Cannot open include file "C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/hi.fun" while reading dictionary "C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/controlDict/functions"

file: C:/Users/KaranBaliga/Desktop/TCAE/GridPro Blood Pump/Fluent_Grids_GridPro/GridPro_Blood_Pump/simulationRun1/TCFD/transient/1_1/system/controlDict at line 78.

From function static bool Foam::functionEntries::includeEntry::execute(Foam::dictionary&, Foam::Istream&)

in file db/dictionary/functionEntries/includeEntry/includeEntry.C at line 169.

FOAM exiting"

I do not know why this error occurs. Can you please help me out?

If required I can attach the case files as well. 

Thanks and Regards,

Karan H Baliga,

GridPro. 

Hello,

I wanted to know if turbogrid mesh in .cgns was compatible with TCAE?

When I try to import it, i get the error "The mesh has invalid format (sees picture).

Thanks in advance for any help.

Dear Sirs,

I want to export a francis turbine runner geomtery to TCAE Pareview... I get always an error

"Loading inputfile "C:\Users\lenovo\Documents\resources\geometry\ft27022023.tcae"...

Required keyword "1_solid-meshInput" with 1 entries is missing in the setup file.

No path to STL file for solid component 1

Inputfile "C:\Users\lenovo\Documents\resources\geometry\ft27022023.tcae" contains invalid settings.

Failed to import surface geometry file "C:\Users\lenovo\Documents\resources\geometry\". A path to .stl or .step file expected."

Mesh is set to cfd mesh only...

anyone to help me..

Best Regards

Jamal

This category is focused on providing public technical support and guidance exclusively for the TCAE simulation environment. The confidential technical support is provided via the ticket system accessible from Menu>Dashboard>Support.

The goal of this category is to provide technical support for TCAE users to share their knowledge and experience to help others troubleshoot technical issues, improve the performance of their simulations, and learn from one another. Members can ask questions, share their own solutions to common problems, and collaborate to improve the overall performance and efficiency of TCAE. The category is open to anyone who is interested in TCAE, regardless of their level of expertise.

The goal of this category is to provide technical support for TCAE users to share their knowledge and experience to help others troubleshoot technical issues, improve the performance of their simulations, and learn from one another. This category is focused on providing technical support and guidance exclusively for TCAE. Members can ask questions, share their own solutions to common problems, and collaborate to improve the overall performance and efficiency of TCAE. The category is open to anyone who is interested in TCAE, regardless of their level of expertise.

Propeller DJI 9450, Phantom 3 drone. CFD + CAA simulation by TCAE. Pressure distribution.

#propeller #acoustics #Simulation #CAE #CFD #FEA #FSI #Optimization #CAA #HPC #engineering

https://www.linkedin.com/feed/update/urn:li:activity:6993850175274295298