Prabs8815 commented 4 years ago

Hello co-users of SOWFA,

I am a newbee to SOWFA and programming in general but have worked with openFOAM and CFD in general. I am trying to put together a tutorial case for myself so that i could develop it later. As of now i did not change any base files of SOWFA but trying to change the example.ADM tutorial to an uniform inflow case (no ABL) with pisoFoamTurbine.ADM solver. After a series of compiling and resolving "banana" type openFOAM errors i reached to the following error

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::turbineModels::horizontalAxisWindTurbinesADM::computeBladeForce() at ??:?

4 Foam::turbineModels::horizontalAxisWindTurbinesADM::horizontalAxisWindTurbinesADM(Foam::GeometricField<Foam::Vector, Foam::fvPatchField, Foam::volMesh> const&) at ??:?

5 ? in "/home/prabhu/OpenFOAM/prabhu-2.4.0/SOWFA-2.4.0/applications/bin/linux64GccDPOpt/pisoFoamTurbine.ADM"

6 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"

7 ? in "/home/prabhu/OpenFOAM/prabhu-2.4.0/SOWFA-2.4.0/applications/bin/linux64GccDPOpt/pisoFoamTurbine.ADM"

Floating point exception (core dumped)

So in relation to the above background information and the above error description i kindly request the community to give feedback on the following questions

Has anyone encountered such an error and could anyone suggest possible approaches one could apply to decode the problem ? For eg: i have checked http://openfoamwiki.net/index.php/HowTo_debugging but reckoned that my error has many question marks thereby rendering less info about point of error.
A more general question related to SOWFA installation and compilation: the platforms folder containing the compiler contains only bin folder and the lib folder is instead located in the SOWFA-2.4.0. This is not inline with the directory organisation of openFOAM-2.4.0 where both lib and bin folders are in ~/OpenFOAM/OpenFOAM-2.4.0/platforms/linux64GccDPOpt/. is this ok (or) does it mean that my compilation went wrong somewhere?

Best regards and happy FOAMing

DeeDiveT commented 4 years ago

Hi @Prabs8815, I have encountered this error before, but I am not sure the exact solution.

If I were you, I will try the following things:

Is the time step too large?
Is there any turbine set out of the wind-farm field?

Hope this can help you and look forward to your feedbacks:)

ewquon commented 4 years ago

All, we have a recent PR #70 from @tonyinme that may offer a working example. You can check it out from here: https://github.com/tonyinme/SOWFA. Please let me know if you have any success.