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Forum: Main CFD Forum

April 26, 2010, 06:03

Replies: 6

k-w turbulent model and inflow boundary conditions

Views: 3,652

Posted By vaina74

I 'chose' the relation ...

I 'chose' the relation
\omega=\frac{\kappa}{\nu_t}
and
\omega=\frac{\epsilon}{0.09\cdot\kappa}

In my case, kinematic viscosity is 1.19e-6 m²/s (sea water) and inlet velocity is 7.3 m/s. If I...

Forum: Main CFD Forum

April 23, 2010, 12:10

Replies: 6

k-w turbulent model and inflow boundary conditions

Views: 3,652

Posted By vaina74

Please, I have some questions about...

Please, I have some questions about implementation of \kappa-\omega SST turbulent model and wall functions.

1. In most papers or threads of this forum I read that, when a wall function is used, y+...

Forum: Main CFD Forum

April 12, 2010, 18:20

Replies: 6

k-w turbulent model and inflow boundary conditions

Views: 3,652

Posted By vaina74

Hi, Sandy. You're right, but the in the most...

Hi, Sandy.
You're right, but the in the most papers I find a turbulent viscosity ratio (sometimes TVR) of 1-10 for external flows (maybe do they all use FLUENT and its manual? ;)). Anyway, I set...

Forum: Main CFD Forum

March 28, 2010, 16:25

Replies: 6

k-w turbulent model and inflow boundary conditions

Views: 3,652

Posted By vaina74

I think it is just the opposite. I read that...

I think it is just the opposite. I read that \omega has a great influence on the turbulence.
Maybe I didn't understand that :(

Forum: Main CFD Forum

March 26, 2010, 07:11

Replies: 6

k-w turbulent model and inflow boundary conditions

Views: 3,652

Posted By vaina74

k-w turbulent model and inflow boundary conditions

My CFD case concerns a blade section of a marine propeller. The hydrofoil chord is 0.3 m and the Reynolds number is about 1.9E6. I choose the \kappa-\omega SST turbulent model and I'm doubtful about...

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