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Floating Point Exception - wrong boundaries or general PC problem? – OF 1.6 extend - |
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February 27, 2013, 05:50 |
Floating Point Exception - wrong boundaries or general PC problem? – OF 1.6 extend -
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Member
Andreas Wendy
Join Date: Aug 2012
Posts: 73
Rep Power: 14 |
Hi Everybody,
Currently I am working on my masterthesis for a simulation of a gyrocopter including autorotation. For that I started to modify the mixerGGI library to include a threedimensional autorotation. I think I worked it out but when I try to start my computation I always get a floating point exception. After some time steps, when I restart the calculation I am able to compute again a number of time steps and so on. This happens also with the not modified mixerGGI library. I have no idea where the fault is. I think my boundaries are OK. Maybe my computer has just a general problem? I’ve got no idea. Maybe someone can have a look or try to run my case with OF 1.6 extend and pimpleDyMFoam if the same error occurs? Best wishes Andreas Link to the complete case: http://ubuntuone.com/0aasoEIvPToraOAPetJJie 0/U: Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 1.6-ext | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class volVectorField; location "0"; object U; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // dimensions [0 1 -1 0 0 0 0]; internalField uniform (10 0 0); boundaryField { outsideSlider { type ggi; value uniform (10 0 0); } insideSlider { type ggi; value uniform (10 0 0); } outlet { type freestream; freestreamValue uniform (10 0 0); } inlet { type freestream; freestreamValue uniform (10 0 0); } sides { type freestream; freestreamValue uniform (10 0 0); } ".*STL" { type movingWallVelocity; value uniform (0 0 0); } } Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 1.6-ext | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class volScalarField; location "0"; object p; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // // density normalized pressure!!! p/rho dimensions [0 2 -2 0 0 0 0]; internalField uniform 0; boundaryField { outsideSlider { type ggi; value uniform 0; } insideSlider { type ggi; value uniform 0; } outlet { type freestreamPressure; } inlet { type freestreamPressure; } sides { type freestreamPressure; } ".*STL" { type zeroGradient; } } // ************************************************************************* // Code:
Boundary-file: /*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM Extend Project: Open source CFD | | \\ / O peration | Version: 1.6-ext | | \\ / A nd | Web: www.extend-project.de | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class polyBoundaryMesh; location "0/polyMesh"; object boundary; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 24 ( outlet { type patch; nFaces 1600; startFace 4362923; } inlet { type patch; nFaces 1600; startFace 4364523; } sides { type patch; nFaces 6400; startFace 4366123; } outsideSlider { type ggi; nFaces 13632; startFace 4372523; shadowPatch insideSlider; zone outsideZone; bridgeOverlap false; } defaultFaces { type empty; nFaces 0; startFace 4386155; } insideSlider { type ggi; nFaces 35144; startFace 4386155; shadowPatch outsideSlider; zone insideZone; bridgeOverlap false; } m1_STL { type wall; nFaces 5880; startFace 4421299; } m2_STL { type wall; nFaces 5849; startFace 4427179; } m3_STL { type wall; nFaces 5849; startFace 4433028; } m4_STL { type wall; nFaces 5772; startFace 4438877; } m5_STL { type wall; nFaces 5849; startFace 4444649; } m6_STL { type wall; nFaces 5849; startFace 4450498; } m7_STL { type wall; nFaces 5772; startFace 4456347; } m8_STL { type wall; nFaces 5772; startFace 4462119; } m9_STL { type wall; nFaces 5801; startFace 4467891; } p1_STL { type wall; nFaces 5880; startFace 4473692; } p2_STL { type wall; nFaces 5849; startFace 4479572; } p3_STL { type wall; nFaces 5849; startFace 4485421; } p4_STL { type wall; nFaces 5772; startFace 4491270; } p5_STL { type wall; nFaces 5849; startFace 4497042; } p6_STL { type wall; nFaces 5849; startFace 4502891; } p7_STL { type wall; nFaces 5772; startFace 4508740; } p8_STL { type wall; nFaces 5772; startFace 4514512; } p9_STL { type wall; nFaces 5801; startFace 4520284; } ) // ************************************************************************* // |
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