Search Results

User Name Remember Me Password

Showing results 1 to 12 of 12 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX August 20, 2012, 06:07

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks OK, as long as you see that it is quite possible... OK, as long as you see that it is quite possible the cold simulation is asymetric. As for your second sentence, my post #26 said So all I can say is do all the meshing tutorials and training...

Forum: CFX August 20, 2012, 02:59

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Inflation layers are important if your flow has... Inflation layers are important if your flow has thin boundary layers which contribute significantly to the results. That boundary layer could be thermal or could be momentum. In a cold flow the...

Forum: CFX August 19, 2012, 19:15

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Inflation is very important to accurately model... Inflation is very important to accurately model boundary layers in mid to high Re flows. This will often give you high aspect ratio elements, but providing they are aligned with the wall (and thus...

Forum: CFX August 16, 2012, 18:27

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks At that scale I cannot see anything wrong with... At that scale I cannot see anything wrong with it. But you need to look closer to be sure. What I am looking for is the size of adjacent elements - there should be no large jump in element size,...

Forum: CFX August 16, 2012, 07:52

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks :) If only it were that simple..... Trust... :) If only it were that simple..... Trust me, your structured mesh is terrible and it is making your results rubbish. The CFX OK/ok/! categories are just guides and are not applicable to all...

Forum: CFX August 15, 2012, 18:38

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Your mesh does not look very good quality. You... Your mesh does not look very good quality. You have massive jumps in element size and terrible aspect ratios. This mesh is going to give very inaccurate results. I would not trust any results from...

Forum: CFX August 15, 2012, 07:54

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Can you post an image of what you are modelling... Can you post an image of what you are modelling and your CCL?

Forum: CFX August 14, 2012, 19:12

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks It appears your unstructured mesh is of a low... It appears your unstructured mesh is of a low enough quality that is making convergence harder than the structured mesh (which appears to have a higher mesh quality). This is also leading to other...

Forum: CFX August 14, 2012, 07:55

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Can you post some images of what you are seeing? Can you post some images of what you are seeing?

Forum: CFX June 8, 2012, 01:42

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks My post from seven years ago tells you exactly... My post from seven years ago tells you exactly what to do - you need smaller time steps (assuming the basic setup of the simulation is correct).

Forum: CFX May 29, 2012, 08:00

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks This is all explained in the FAQ I linked to... This is all explained in the FAQ I linked to previously.

Forum: CFX May 28, 2012, 18:46

Replies: 36 convergence for transient/steady state simulation Views: 21,102 Posted By ghorrocks Not at all. Going to transient simulations is the... Not at all. Going to transient simulations is the option of last resort. This FAQ describes a more complete list of options:...

Showing results 1 to 12 of 12

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