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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: Docfreezzzz

Forum: Main CFD Forum August 12, 2011, 14:03

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz You are forcing uniform flow in a region where it... You are forcing uniform flow in a region where it is not likely that physics dictates that. Inlets modeled as you have always give me problems. Basically make your inlet farther away. The length...

Forum: Main CFD Forum August 10, 2011, 13:11

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz After looking at the e-mail you sent me, your... After looking at the e-mail you sent me, your grid has a very weird character which is likely causing the problem. Modelling inlets as simply a segmented portion of the boundary condition does not...

Forum: Main CFD Forum August 9, 2011, 12:16

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz My e-mail is webmaster at cfdengineer dot com. ... My e-mail is webmaster at cfdengineer dot com. You should try resizing the images and posting here as you would likely get more help from that approach. The more eyes that look at a problem, the...

Forum: Main CFD Forum August 8, 2011, 13:13

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz I'm not very familiar with FLUENT so questions... I'm not very familiar with FLUENT so questions regarding the particulars, including adaptive time stepping, etc., are probably lost on me. I only use custom CFD applications in my work. However,...

Forum: Main CFD Forum August 5, 2011, 12:53

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz @cfdnewbie. Yes, it's just going to damp some of... @cfdnewbie. Yes, it's just going to damp some of the higher frequency error in the initial flowfield. Multigrid is hard with unstructured grids so I find myself doing this a lot. I'm trying the...

Forum: Main CFD Forum August 4, 2011, 10:48

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz Can you post a slice of the velocity contours... Can you post a slice of the velocity contours through both inlet and outlet here? I'm still suspicious that your O2 solution has an unsteady character to it that is not resolved via the O1 solution....

Forum: Main CFD Forum August 3, 2011, 10:27

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz I was not referring to the grid quality but... I was not referring to the grid quality but rather the refinement in high gradient regions. A course grid can often be harder to converge with higher order methods. By unsteady characteristics I...

Forum: Main CFD Forum August 2, 2011, 15:16

Replies: 18 flat residuals Views: 2,360 Posted By Docfreezzzz Have you investigated the solution results for... Have you investigated the solution results for the 2nd order run? Is it possible that the 2nd order solution has unsteady characteristics? Also, you may have a very poor grid which is stalling...

Showing results 1 to 8 of 8

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