rhoPimpleFoam aborting with floating point exception (because of wrong bc p?)
Hello everyone,
what I did until now: 3D structure build with ProE --> exported as IGES/STEP Imported with Netgen-4.9.13 and meshed with option very fine --> exported as Neutral Format Imported with netgenNeutralToFoam (openfoam-2.0.0) copied files from ... /compressible/rhoPimpleFoam/ras/angledDuct (edited a little bit the patches and names of the patches) The way I set up my boundary conditions: (http://netload.in/dateiOF69C1QR0g/20110808r1.tar.gz.htm ~134 KB) (it's a little bit bigger file size than ~97.7 KB because of compatibility with openFOAM 1.7.1 and 2.0.x.) These are the boundary conditions I want to set: inlet is open to the atmosphere (athmospheric pressure 101325 Pa, inlet flow 0.000020833 Kg/s) Outlet0 and 1 are connected to a low pressure pump. The pressure for each outlet is 1000Pa. Temperature doesn't matter, so I set the inlet entry to 273.15 K and the other ones to zeroGradient. I've tried it with openfoam-1.7.1, 2.0.0 and 2.0.1, laminar and turbulent settings edited relaxation factors, used rhoSimpleFoam and rhoPimpleFoam --> nothing worked for my case. I got always sooner or later a floating point exception. My questions are: 1) Is it possible at all to solve low- or high-pressure problems with rhoSimpleFoam, rhoPimpleFoam? 2) What is the problem in my case? Hope you can help me with my case. Many thanks for your attention and best regards Hauke |
Hello Hauke,
I am working on a similar problem analyzing the air flow into a vacuum chamber through a 20 mil capillary. My inlet and outlet pressures are very similar to yours. I am interested in how this goes for you as I am having similar problems getting my model to work. -Eric |
What is the Courant Number, MaxCo and deltaT (time step) you are using? for rhoPimpleFoam
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