[vinithm]

Hello everyone,


I'm new to OpenFOAM. Lately I have been trying to run the motorBike tutorial. When I execute the surfaceFeatureExtract command, the resulting polyMesh directory files except the 'boundary' file contains special characters. I have attached the file for reference. Any help is greatly appreciated.


Thank you all.

[Tobermory]

Check your controlDict, and in particular the writeFormat parameter. It's probably binary, in which case change it to ascii and the file contents will all be plain text ... but much larger of course.

[vinithm]

Thank you for the reply Tobermory, I was able to fix the problem.


I also have an additional question. When 'simpleFoam' is executed, I can see from the log file 'no convergence criteria found', 'no MRF models present' , 'no finite volume options present'. In addition, I find two warnings:



1. FOAM Warning :
From Foam::labelHashSet Foam:olyBoundaryMesh:atchSet(const Foam::UList<Foam::wordRe>&, bool, bool) const
in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 896
Cannot find any patch or group names matching motorBikeGroup


forceCoeffs forceCoeffs1:
2. --> FOAM Warning :
From Foam::labelHashSet Foam:olyBoundaryMesh:atchSet(const Foam::UList<Foam::wordRe>&, bool, bool) const
in file meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C at line 896
Cannot find any patch or group names matching motorBikeGroup







In the end, flow fields have not been calculated. I have not made any changes to the tutorial files. I have attached the log file.


Could you please tell me where am I going wrong?


Thanks.

[Tobermory]

The three warnings:

'no convergence criteria found', 'no MRF models present' , 'no finite volume options present'

are as expected and normal - these are just informing you that no convergence criteria are set in fvSolution (you can, and should, use these criteria to stop simulations when they are sufficiently converged ... not necessary for this tutorial case though), that the case does not involve moving meshes and that there are no fvOptions additions.

The next two warnings are fatal - I would check the output of the log files from the previous steps in the Allrun - something has clearly gone wrong with the meshing. Good luck.

[vinithm]

Thank you Tobermory. I think I have understood where I have gone wrong and will fix it based on the hints given by you.


thanks again.