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Showing results 1 to 10 of 10 Search took 0.00 seconds. Search: Posts Made By: SkunkWorks

Forum: OpenFOAM September 12, 2011, 17:29

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks I found the wrong om my simulation ... Itś so simple that I was traped by my own expectation. The explanation is that the cl factor is less then you have a short wingspan. For a example: I did a setup with a 10 meter wingspan and a...

Forum: OpenFOAM May 8, 2011, 16:40

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks As I wrote the case is identical except for... As I wrote the case is identical except for nNonOrthogonalCorrectors is 2 instead for 0. and the mesh. The picture is also at the the....

Forum: OpenFOAM May 4, 2011, 09:20

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Hi ! I've did a last try with enGrid, and... Hi ! I've did a last try with enGrid, and did manage to make a prismatic layer. But I got a bad mesh quality. I did 4 meshes 2 with 10 layer and 2 with 15. The one with 15 layer bailed out...

Forum: OpenFOAM April 19, 2011, 03:14

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Hi and thanks a lot! I was afraid of that. I... Hi and thanks a lot! I was afraid of that. I have tried many time to make a prismatic layer in Engrid, but it doesn't work! I think I had to use snappyhexmesh instead. Regards / Rickard

Forum: OpenFOAM April 15, 2011, 04:15

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Sorry for late response! You got the picture and... Sorry for late response! You got the picture and the complete case in: http://www.tooslow.net/rattus/CFD_Picture/Projekt20110401Alfa5Tord2Test2/ I have try to make a finer mesh but Engrid and...

Forum: OpenFOAM April 7, 2011, 15:49

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks I have done a new similar case. No sadly... I have done a new similar case. No sadly not. The patchIntegrate still give the approx. 1/3 of the calculated lift And the forcefunction give approx. half 3,479 N. Lift =...

Forum: OpenFOAM June 10, 2010, 17:16

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Hi ! I have tried the liftDrag function and... Hi ! I have tried the liftDrag function and got 25.86 N according to patchIntegrate 10.6492 there is a factor 2,428 look at:...

Forum: OpenFOAM June 2, 2010, 07:43

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Hi! Then I run " patchIntegrate p wing "... Hi! Then I run " patchIntegrate p wing " I can see that I have a converges the last 80 iterations doesn't change the results at all. And the last 440 iterations change from -10.6123 to...

Forum: OpenFOAM June 1, 2010, 17:22

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks Hi and thanks for answer! The domainsize is... Hi and thanks for answer! The domainsize is a tube which is 25 meter long and 16.8 meter wide and 16 meter high. The air craft is 0.8 meter long a and equal span. ...

Forum: OpenFOAM May 27, 2010, 18:39

Replies: 22 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? Views: 8,662 Posted By SkunkWorks 3D simulation with blended wingbody. Lift a 1/3 of what it shuld be. Any wrong? http://www.tooslow.net/rattus/CFD_Picture/20100424_Alfa5/20100424_T=1000_Alfa5_Wingtip3_4.pngHi! is there any wrong in my simulation ? To little lift in patchIntegrate, about a 1/3 of what...

Showing results 1 to 10 of 10

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