Search Results

User Name Remember Me Password

Showing results 1 to 11 of 11 Search took 0.00 seconds. Search: Posts Made By: bigphil

Forum: OpenFOAM Programming & Development April 9, 2018, 05:13

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Without seeing the rest of your code, I cannot... Without seeing the rest of your code, I cannot say whether you need to explicitly perform a parallel sync; however, from looking at your code snippet, the only terms that might need it are those you...

Forum: OpenFOAM Programming & Development April 7, 2018, 10:38

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Actually, as "snGrad()" constructs and returns... Actually, as "snGrad()" constructs and returns the full patch field, it will be more efficient to store the snGrad as follows: const polyPatchList& patches = mesh.boundaryMesh();...

Forum: OpenFOAM Programming & Development April 7, 2018, 10:33

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Sorry, "forAll(patchI, faceI)" should have been... Sorry, "forAll(patchI, faceI)" should have been "forAll(gradcMinusField, faceI)": I have editted this in my previous post. Also, for your second error, please be careful, you have written: else...

Forum: OpenFOAM Programming & Development April 6, 2018, 04:54

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Try the following: const polyPatchList&... Try the following: const polyPatchList& patches = mesh.boundaryMesh(); forAll(patches,patchI) { if (patches[patchI].name() == "midup") { fixedGradientFvPatchScalarField&...

Forum: OpenFOAM Programming & Development June 6, 2017, 12:53

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Hi Bobi, The block coupled method will help... Hi Bobi, The block coupled method will help the convergence of the cPlus and cMinus equations; however, it seems that currently you are limited by the convergence of the Ue equation (because of...

Forum: OpenFOAM Programming & Development May 27, 2017, 11:08

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil babakflame, You can manually apply... babakflame, You can manually apply under-relaxation when setting the boundary conditions e.g. // No under-relaxation //gradcMinusField = cMinus.boundaryField()[patchI] *...

Forum: OpenFOAM Programming & Development May 26, 2017, 13:03

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Hi babakflame, Can you also post the output... Hi babakflame, Can you also post the output from the solver? What exactly is diverging? the linear solver for one of the equations? or the outer pimple loop? or time-steps? From a quick look...

Forum: OpenFOAM Programming & Development May 22, 2017, 09:27

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Hi babakflame, Can you post the code you are... Hi babakflame, Can you post the code you are using? This might help give an idea of how the stability of your method could be improved (also it will help others who might want to try something...

Forum: OpenFOAM Programming & Development March 8, 2017, 03:35

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil The snGrad at a patch is correctly calculated... The snGrad at a patch is correctly calculated from: Ue.boundaryField()[patchI].snGrad() If you were to use: fvc::snGrad(Ue) this would give you the snGrad on every internal face and...

Forum: OpenFOAM Programming & Development March 7, 2017, 15:47

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Hi babakflame, A couple of... Hi babakflame, A couple of comments/questions: in the picture of your domain, the normal vectors "n" point inwards (i.e. in to the domain); however, OpenFOAM convention assumes the normals...

Forum: OpenFOAM Programming & Development March 6, 2017, 03:34

Replies: 47 Snippet for redefining fixedGradient boundary condition for a patch inside solver Views: 6,186 Posted By bigphil Hi babakflame, What equation are you trying... Hi babakflame, What equation are you trying to implement as the boundary condition? I don't think the following makes sense: cPlus.boundaryField()[patchI].snGrad() = ...

Showing results 1 to 11 of 11

Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home General Forums     Main CFD Forum     System Analysis     Structural Mechanics     Electromagnetics     CFD Freelancers     Hardware     Lounge Software User Forums     ANSYS         CFX         FLUENT             Fluent Multiphase             Fluent UDF and Scheme Programming         ANSYS Meshing & Geometry     Autodesk Simulation CFD     AVL FIRE     COMSOL     CONVERGE     Fidelity CFD     FloEFD, FloWorks & FloTHERM     FLOW-3D     OpenFOAM         OpenFOAM News & Announcements             OpenFOAM Announcements from ESI-OpenCFD             OpenFOAM Announcements from OpenFOAM Foundation             OpenFOAM Announcements from Other Sources         OpenFOAM Installation         OpenFOAM Meshing & Mesh Conversion         OpenFOAM Pre-Processing         OpenFOAM Running, Solving & CFD         OpenFOAM Post-Processing         OpenFOAM Programming & Development         OpenFOAM Verification & Validation         OpenFOAM Community Contributions             OpenFOAM CC Toolkits for Fluid-Structure Interaction         OpenFOAM Journal         OpenFOAM Bugs     Phoenics     REEF3D         REEF3D News & Announcements     Siemens         STAR-CCM+         STAR-CD     SU2         SU2 News & Announcements         SU2 Installation         SU2 Shape Design Mesh Generation & Pre-Processing Software     ANSA     enGrid     GridPro     Pointwise & Gridgen Visualization & Post-Processing Software     EnSight     FieldView     ParaView     Tecplot Special Topics     Mesh Generation & Pre-Processing     Visualization & Post-Processing CFD Online Community     Site News & Announcements     Site Help, Feedback & Discussions     CFD-Wiki