Forum: Main CFD Forum
April 29, 2013, 08:35
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Replies: 25
Views: 2,890
Actually, now, i am calculating it in my code...
Actually, now, i am calculating it in my code (Immersed Boundary Code).
The drag coefficient is excellently matching the reference data at Re=185
However, the lift coefficient is small around 0.302...
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Forum: Main CFD Forum
April 28, 2013, 10:33
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
April 11, 2013, 06:53
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Replies: 25
Views: 2,890
The recirculation length L/D at Re=40 is around...
The recirculation length L/D at Re=40 is around 2, however, from literature i found that it is in the range 2.2~2.4.
Could you please tell me what could be the reason??
(I used different grid size,...
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Forum: Main CFD Forum
March 18, 2013, 23:42
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Replies: 25
Views: 2,890
Dear Dr. Filippo
i have some strange results: ...
Dear Dr. Filippo
i have some strange results:
when i set the mesh size to 0.1D, i have a good results for the length of the recirculation zone and the drag coefficient.
l/D=2.33 & Cd=1.55
On the...
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Forum: Main CFD Forum
February 20, 2013, 11:23
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 20, 2013, 09:55
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 20, 2013, 09:46
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 20, 2013, 09:31
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 20, 2013, 07:29
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Replies: 25
Views: 2,890
Diameter=0.1; % cylinder diameter ...
Diameter=0.1; % cylinder diameter
%kinematicviscosity=1.04e-6; %water at 20 'C
kinematicviscosity=0.01;
ineltvelocity=Re*kinematicviscosity/Diameter;
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Forum: Main CFD Forum
February 20, 2013, 07:25
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Replies: 25
Views: 2,890
I am using the non-dimensional form of N-S...
I am using the non-dimensional form of N-S equation, So i have to set the Reynolds no. and the inlet velocity explicitly, the viscosity does not appear explicitely in the momentum equations.
So,...
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Forum: Main CFD Forum
February 20, 2013, 03:19
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Replies: 25
Views: 2,890
I have a very strange results:
When i set the...
I have a very strange results:
When i set the kinematic viscosity as 1.04e-6 i have no recirculation zone.
however, when i set it to 1e-2 i clearly see the recirculation zone.
i calculate the free...
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Forum: Main CFD Forum
February 19, 2013, 08:31
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Replies: 25
Views: 2,890
Thanks a lot for your help.
About the stability...
Thanks a lot for your help.
About the stability condition, i think because i am using an implicit way for the treatment of the viscous term then, the restrict constrain of time will be relaxed, so:...
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Forum: Main CFD Forum
February 19, 2013, 08:19
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 19, 2013, 05:16
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 19, 2013, 05:12
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Replies: 25
Views: 2,890
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Forum: Main CFD Forum
February 19, 2013, 03:30
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Replies: 25
Views: 2,890
No recirculation zone, why??
I have developed a code to simulate a flow past a circular cylinder using Immersed Boundary Method.
I set Re=40, and the free stream inlet velocity to 1 and the diameter of the cylinder 0.1.
The...
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