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Forum: OpenFOAM Running, Solving & CFD

January 16, 2015, 13:00

Replies: 10

Airfoil Stagnation point Not reaching one

Views: 1,567

Posted By ssss

You are welcome, I understand the frustation...

You are welcome, I understand the frustation you've felt with OpenFoam we always suffer of it, but well, at least it's openSource and free.

In order to learn how to modify the solver code you will...

Forum: OpenFOAM Running, Solving & CFD

January 16, 2015, 12:28

Replies: 10

Airfoil Stagnation point Not reaching one

Views: 1,567

Posted By ssss

Write NS incompressible: \vec u \dfrac{d\vec...

Write NS incompressible:

\vec u \dfrac{d\vec u}{dt} + \vec u \nabla \vec u = -\nabla (\dfrac{P}{\rho} )+ \nu \nabla \cdot (\nabla \vec u)

Now write: \dfrac{P}{\rho} as p. Resulting in:
...

Forum: OpenFOAM Running, Solving & CFD

January 15, 2015, 18:42

Replies: 10

Airfoil Stagnation point Not reaching one

Views: 1,567

Posted By ssss

I understand now your point. You need to be...

I understand now your point.

You need to be careful, the nu is the real nu of the fluid you are working with because it is the fluid parameter which you are using for solving the NS incompressible...

Forum: OpenFOAM Running, Solving & CFD

January 15, 2015, 17:16

Replies: 10

Airfoil Stagnation point Not reaching one

Views: 1,567

Posted By ssss

You may see it in the code of simpleFoam. ...

You may see it in the code of simpleFoam.

simpleFoam, just uses an incompressible formulation, just divide NS equations by rho, and name P/rho as p.

So as you can see this aproximation is the...

Forum: OpenFOAM Running, Solving & CFD

January 15, 2015, 14:51

Replies: 10

Airfoil Stagnation point Not reaching one

Views: 1,567

Posted By ssss

If you are using simpleFoam or other...

If you are using simpleFoam or other incompressible solver then the solver does not read the rho, instead he uses rho=1 withouth taking into account your input in the turbulenceProperties

If you...

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