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

Forum: Main CFD Forum February 5, 2014, 15:01

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian I found that the transient and steady-state... I found that the transient and steady-state simulations will give exactly the same results if both of them converge for 3D case. Probably transient simulation is just for a convergence issue.

Forum: Main CFD Forum February 5, 2014, 09:54

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian You mean the simulations you ran on that are all... You mean the simulations you ran on that are all transient? Have you tried 3D simulation on that?

Forum: Main CFD Forum February 5, 2014, 03:42

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian Have you even ran the simulation for stall flow?... Have you even ran the simulation for stall flow? Will transient simulations be always necessary for the convergence if fine enough mesh is used?

Forum: Main CFD Forum February 3, 2014, 10:48

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian What do you mean by 'detached eddy version of the... What do you mean by 'detached eddy version of the basic turbulence models'?

Forum: Main CFD Forum February 2, 2014, 05:59

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian In my tests of the 3D wing CFD, the grids... In my tests of the 3D wing CFD, the grids independence is already verified. Finer grids do not change Cl and Cd anymore. And in the comparison with experiment, I found that the larger angle of attack...

Forum: Main CFD Forum February 1, 2014, 06:08

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian Is RANS model able to predict Cl accurately when... Is RANS model able to predict Cl accurately when the wing is already stalled? Could higher tangential resolution help on that? Or higher tangential resolution could help on accuracy of the stall...

Forum: Main CFD Forum January 31, 2014, 05:49

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian What's the reason that we typically cluster grid... What's the reason that we typically cluster grid points near leading and trailing edge? Because the gradients at leading and trailing edge are larger than the other parts? Will very large aspect...

Forum: Main CFD Forum January 30, 2014, 05:19

Replies: 19 Simple question? On mesh aspect ratio on boundaries Views: 22,824 Posted By Anna Tian What if we have separated flow? I'm currently... What if we have separated flow? I'm currently having aspect ratio in the boundary layer of about 30000 for the wing simulation. It doesn't bring convergence problem when there's no BL separation....

Showing results 1 to 8 of 8

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