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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: Ofoam200_nwb

Forum: OpenFOAM July 31, 2011, 06:42

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Hi, Martin, JavaFoil is kind of like XFoil but... Hi, Martin, JavaFoil is kind of like XFoil but less rigourous in its approach. Yes, I remember reading about effective-lengthening of geometry somewhere. Anyway, regarding the wake, in the pictures...

Forum: OpenFOAM July 30, 2011, 17:38

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Hey everyone, To start with the improvements... Hey everyone, To start with the improvements you all suggested, I refined my grid a bit from 80k cells to 120k cells, reduced the abruptness of cell size jumps a bit, and reduced freestream...

Forum: OpenFOAM July 30, 2011, 05:48

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Thanks, everyone! Lots of good stuff out there... Thanks, everyone! Lots of good stuff out there that I've seemed to completely miss. Sorry about that. Mad: Thanks. This is certainly germane. I will try switching models keeping in mind their y+...

Forum: OpenFOAM July 29, 2011, 09:52

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb I should probably clarify the yplus plot. The... I should probably clarify the yplus plot. The order in which I defined the airfoil faces are: 1. nose 2. top (nose-end to trailing edge) 3. bottom (nose-end to trailing edge) As a result of this,...

Forum: OpenFOAM July 29, 2011, 09:47

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Felix, I enlarged my domain, waited for the... Felix, I enlarged my domain, waited for the integral quantities to converge and the results I finally obtained were: Cl = 0.52; Cd = 0.045! (large by a factor of 5!) I have attached my y+ plot...

Forum: OpenFOAM July 28, 2011, 12:30

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Felix, Thanks a lot. I get what yo're saying... Felix, Thanks a lot. I get what yo're saying about convergence, and I do suspect that my grid is maybe not large enough (I did make sure that it was sufficiently fine close to the airfoil.)...

Forum: OpenFOAM July 28, 2011, 09:40

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb Any sort of suggestions are most welcome. ... Any sort of suggestions are most welcome. Thank you!

Forum: OpenFOAM July 28, 2011, 07:42

Replies: 14 NACA0012: Residual convergence issue Views: 6,049 Posted By Ofoam200_nwb NACA0012: Residual convergence issue Hi everyone, I am just about getting started with OpenFOAM, and I was trying to simulate a NACA0012 2D section at 5 degrees angle of attack in a Reynolds number of 5 million (medium: water. So rho...

Showing results 1 to 8 of 8

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