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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: Josh

Forum: Main CFD Forum March 15, 2011, 17:23

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh Chances are the flow is laminar and unsteady and... Chances are the flow is laminar and unsteady and that while laminar separation occurs, neither transition nor reattachment do. Like you said, the eddy viscosity dampens the effect.

Forum: Main CFD Forum March 14, 2011, 16:46

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh I believe this is a typo or Fluent-based... I believe this is a typo or Fluent-based nomenclature. The k-w SST transitional must mean the low-Reynolds-number SST model (i.e., without a wall function - the grid resolves the viscous sublayer, y+...

Forum: Main CFD Forum March 14, 2011, 15:02

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh Well, truthfully, a turbulence model is not ideal... Well, truthfully, a turbulence model is not ideal for low-Reynolds-number flow. The physics is very complex, so modeling the physics is tough. Namely, RANS methods can predict neither the...

Forum: Main CFD Forum March 14, 2011, 13:06

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh In the link Truffal provided, they compare the... In the link Truffal provided, they compare the classic (standard) SST model with the SST transition model (i.e., gamma-Re_theta). The SST transition model is the same thing as the gamma-Re_theta...

Forum: Main CFD Forum March 13, 2011, 18:42

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh Truffal - It was unsteady, but I'm afraid I... Truffal - It was unsteady, but I'm afraid I can't give you the grid, timestep, parameter, etc. details because we're publishing the paper! The residuals do oscillate rather strongly, but should be...

Forum: Main CFD Forum March 11, 2011, 17:34

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh Truffal - I have used the k-w (SST) γ-Reθ... Truffal - I have used the k-w (SST) γ-Reθ transition model with excellent results on the NACA 0012 airfoil at 5E4 <= Re <= 2.5E5. I have recently modeled the SD7003, as well, though I haven't...

Forum: Main CFD Forum March 10, 2011, 17:01

Replies: 51 Two-equation turbulent models: low re airfoils Views: 20,906 Posted By Josh Does the latest version of Fluent not include the... Does the latest version of Fluent not include the gamma-Re_theta (intermittency and momentum thickness Reynolds number) transition model?

Showing results 1 to 7 of 7

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