CFD Online Discussion Forums - Solving new implicit equation

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Solving new implicit equation

Hey,

I`m wondering if there is a possibility to solve a implicit equation in fluent:

Code:

C1 * v + (v * nabla) v = C2

or in components

Code:

C1 * v_x + v * grad(v_x) = C2

C1 * v_y + v * grad(v_y) = C2

C1 * v_z + v * grad(v_z) = C2

where C1 and C2 are known constants and v is a vector field.

To get my v, I can form this to a semi-implicit equation system to remove the coupling of the three equations but I don´t know, how to solve them in fluent... In openFOAM I could just define a fvScalarMatrix let the solver do his work but for fluent I have no plan how to do.
I have also tried out to use the scalar transport equation but it does not work too.

Any ideas about this? Or is it better to solve this equations external?

Thanks in advance

Max

Hey, its me again.

Nobody has an idea?

Quote:

Originally Posted by Maxxxx (Post 830382)

Hey,

I`m wondering if there is a possibility to solve a implicit equation in fluent:

Code:

C1 * v + (v * nabla) v = C2

or in components

Code:

C1 * v_x + v * grad(v_x) = C2

C1 * v_y + v * grad(v_y) = C2

C1 * v_z + v * grad(v_z) = C2

Hello,
Has your problem been solved? I have the same problem now. Apply spontaneous nonlinear equations to the source project.