qt.qpa.xcb: could not connect to display 192.168.0.1:0 qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. Aborted (core dumped)I get this error while I type in parafoam or paraview in the terminal, please help</span>
blockMesh not working
I modified the dimensions of the cavity to my requirement in the blockMeshDict file. Then ran the blockMesh file without any errors.But upon running icoFoam, after a certain number of successful iterations I get an error message. It is as follows,Time = 0.075Courant Number mean: 843.929 max: 1563.48#0 Foam::error::printStack(Foam::Ostream&) at ??:?#1 Foam::sigFpe::sigHandler(int) at ??:?#2 ? in "/lib/x86_64-linux-gnu/libc.so.6"#3 Foam::symGaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?#4 Foam::symGaussSeidelSmoother::smooth(Foam::Field<double>&, Foam::Field<double> const&, unsigned char, int) const at ??:?#5 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?#6 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/icoFoam"#7 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/icoFoam"#8 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/icoFoam"#9 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/icoFoam"#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"#11 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/icoFoam"Floating point exception (core dumped)How can I rectify this issue?Thanks, in advance.
It's saying that 'missing destination while operand' while I tried putting 'cp -r $FOAM_TUTORIALS/incompressible/icoFoam/cavitycavity'
Can you please explain how to open blockMeshDict in text editor?
What is "hex" & "simpleGrading" in blocks under the blockMeshDict file?
When I am using the tutorials command, it is showing -cannot stat '-' No such file or directory
My velocity contour for the 0th timestep looks different from the contour on the video....
Why do we type in icoFoam command after blockMesh? Can we use it the other way round?
What does the -r represent?In cp command
I am getting error in the 3rd command itself where we are told to copy a file from tutorials folder to run ...No such file or directoryI am using this command: cp -r $FOAM_TUTORIALS/incompressible/icofoam/cavity/cavity .</span></span>
Does mkdir refer to make directory?
What order is followed by OpenFOAM while giving dimension??
Tutorial: Setting-up a Test Case in OpenFOAMTime: 9:20Title: Error in icoFoamDescription: When i execute icoFoam, It gives me this error. What should i do?Create timeCreate mesh for time = 0--> FOAM FATAL ERROR: Cannot find file "points" in directory "polyMesh" in times "0" down to constant From function virtual Foam::IOobject Foam::fileOperation::findInstance(const Foam::IOobject&, Foam::scalar, const Foam::word&) const in file global/fileOperations/fileOperation/fileOperation.C at line 871.FOAM exiting
Why does velocity contain three values? In the pressure file we added only one value.
Does the blockMeshDict file contain both geometry and mesh data?
Couldn't find the 'active variable control' tab in the post processing of the test case in ParaView.
What is the key difference between dot and box icons in paraview? Which one gives correct value?
What is the significance of deltaT value?Can we use different value? What happens if we increase or decrease its value?How it relates to courant (CFL) number?
What is the meaning of zeroGradient boundary condition?
What is the meaning of noSlip boundary condition?
Pressure dimensions/units should be kg/m*s^2. why it is different here?
Do we really need $FOAM_RUN directory? Why it is required? Why it does not comes with installation?
Does these tutorial directory have any instructions on how to run case files. Video instructions or any Readme file?
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Outline:Setting-up a Test Case in OpenFOAM: Create Run directory Copy a case from Tutorial directory to Run directory Overview of blockMeshDict Overview of 0 folder Contents of p and U files Overview of transportProperties file Parameters in controlDict file blockMesh command icoFoam solver paraFoam command View contour plots in ParaView
Setting-up a Test Case in OpenFOAM: Create Run directory Copy a case from Tutorial directory to Run directory Overview of blockMeshDict Overview of 0 folder Contents of p and U files Overview of transportProperties file Parameters in controlDict file blockMesh command icoFoam solver paraFoam command View contour plots in ParaView
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