Hello, I am trying to replicate the cavity problem discussed in Tutorial 3 but have encountered the following error. FOAM FATAL ERROR: cannot find file "/home/openfoam/run/system/controlDict" From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 539.FOAM exitingHow should I proceed?
Good morning sir,Recently i started using openfoam, i have watched lid driven cavity simulation problem, for the same problem i changed time step to 2000 and higher values, still it is not convergent. Also i changed the methods,schemes and increased my mesh up to 100 but it is not convergent!1) for which time step, the tutorial is convergent ?2) what is the fluid used in that problem ? How can it be 0.01? How to take the value of kinematic viscosity ? 3) your case is Re = 10, suppose for Re = 100, how to take d,V and viscosity for the fluid air i need ? i did like this , d=0.1m, v=1, accordingly viscosity =0.001? my doubt is viscosity cannot be constant in case of air, for different temperatures different viscosities? please tell me how to take viscosity? Is my approach is correct?4) Finally please tell me how to d,v and kinematic viscosity values ? For what time step and values it is convergent.Thank you.
Q 1) for a square cavity blocks( hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1));Mesh size 20x20 then n= 20,suppose blocks( hex (0 1 2 3 4 5 6 7) (40 20 1) simpleGrading (1 1 1));mesh size = 40x 20, then how to take n = ? Q2)i want a parallel plate with length = 10 ft, breadth = 1 ft.convertToMeters 1;vertices( (0 0 0) (10 0 0) (10 1 0) (0 1 0) (0 0 0.01) (10 0 0.01) (10 1 0.01) (0 1 0.01));Is it write sir ?
I am using buoyantBoussinesqSimpleFoam solver for natural convection problem. i got few results please help me to draw residual plots(convergence criteria and How to calculate Nusselt number ?
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Outline: OpenFoamஐ பயன்படுத்தி, ஒரு lid driven cavityல் flowஐ simulate செய்வது சிக்கலின் குறிப்பீடு Lid Driven Cavityன் file structure Boundary conditionகள் Geometryஐ mesh செய்வது Geometryஐ mesh செய்து, paraviewல் பார்ப்பது Solverஐ பற்றி தீர்வுகாணல் Paraview Streamline contour U மற்றும்V velocityஐ plot செய்வது முடிவை validate செய்வது
OpenFoamஐ பயன்படுத்தி, ஒரு lid driven cavityல் flowஐ simulate செய்வது சிக்கலின் குறிப்பீடு Lid Driven Cavityன் file structure Boundary conditionகள் Geometryஐ mesh செய்வது Geometryஐ mesh செய்து, paraviewல் பார்ப்பது Solverஐ பற்றி தீர்வுகாணல் Paraview Streamline contour U மற்றும்V velocityஐ plot செய்வது முடிவை validate செய்வது
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