Search Results

User Name Remember Me Password

Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: hansel

Forum: OpenFOAM September 15, 2009, 10:27

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel I'm keeping the courant number < 0.2. This means... I'm keeping the courant number < 0.2. This means I'm using about 0.1ms steps and I let the simulation run for about 2 seconds. I guess that's approximately 20,000 iterations.

Forum: OpenFOAM September 14, 2009, 22:09

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel Thanks Walex, you seem to be onto something here.... Thanks Walex, you seem to be onto something here. I changed my initial value of K from .017 to .00017 and it came out completely different. In fact now the drag is too low and the K settled out in...

Forum: OpenFOAM September 14, 2009, 12:27

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel Thanks for the reply. Just before you replied I... Thanks for the reply. Just before you replied I found that I was using the high Re model. Since my wings are only 10cm across and the air is 6m/s I think I'm definitely should be using the low Re...

Forum: OpenFOAM September 14, 2009, 11:16

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel Walex, if you make any progress please post what... Walex, if you make any progress please post what you did here. What are you using for your transport properties? This is what I'm using, do these look right for air? transportModel Newtonian;...

Forum: OpenFOAM September 12, 2009, 21:52

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel forces By the way, even with the finer mesh I have not managed to get results that agree with what the text books say the drag on a cylinder should be.

Forum: OpenFOAM September 7, 2009, 17:34

Replies: 13 incorrect forces for symmetric airfoil Views: 2,841 Posted By hansel I was doing some experiments on a cylinder and... I was doing some experiments on a cylinder and getting forces that were in the wrong direction. Then I made my mesh finer (I went from 1cm to 3mm) and it completely changed the forces. I was...

Showing results 1 to 6 of 6

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