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Forum: Fluent UDF and Scheme Programming

April 11, 2011, 03:08

Replies: 21

Viscosity UDFs

Views: 10,510

Posted By coglione

Are you sure this is the right forum for this...

Are you sure this is the right forum for this question?
It sounds pretty much like OpenFoam which has its own userforum here on cfd-online.
cheers

Forum: Fluent UDF and Scheme Programming

May 12, 2009, 07:44

Replies: 21

Viscosity UDFs

Views: 10,510

Posted By coglione

Hello Jane, non-newtonian fluids are always...

Hello Jane,
non-newtonian fluids are always prone for numerical problems due to the highly non-linear nature of the momentum equation involved. I usually start the simulation with a moderate shear...

Forum: Fluent UDF and Scheme Programming

May 12, 2009, 02:57

Replies: 21

Viscosity UDFs

Views: 10,510

Posted By coglione

Hello Jane, the correct equation for strain...

Hello Jane,

the correct equation for strain rate is given by supernova in the first message of this thread. Use his coding or simply the macro C_STRAIN_RATE_MAG(c,t). It will return excactly the...

Forum: Fluent UDF and Scheme Programming

May 11, 2009, 04:37

Replies: 21

Viscosity UDFs

Views: 10,510

Posted By coglione

hello Jane, C_DUDX(c,t) is a predefined...

hello Jane,

C_DUDX(c,t) is a predefined macro which returns the derivative of x-velocity with respect to x-coordinate. You do not have to define it by yourself. However there is also a macro ...

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