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Forum: Fluent UDF and Scheme Programming

August 7, 2012, 04:05

Replies: 11

Velocity gradient on edge

Views: 4,306

Posted By gearboy

Shear stress is a wall boundary condition. That...

Shear stress is a wall boundary condition. That means no flow through the boundary/edge. Is it the real case?

Forum: Fluent UDF and Scheme Programming

August 6, 2012, 10:30

Replies: 11

Velocity gradient on edge

Views: 4,306

Posted By gearboy

You should only define boundary edge's velocity...

You should only define boundary edge's velocity same as the neighbor cell. Never specify cell's velocity same as the edge.

In face, if you specify the cell's velocity, it will not work. Because...

Forum: Fluent UDF and Scheme Programming

August 6, 2012, 02:39

Replies: 11

Velocity gradient on edge

Views: 4,306

Posted By gearboy

You can discretize the gradient manually so as to...

You can discretize the gradient manually so as to set the velocity at the edge. For example, if the gradient is 2 and we use the first-order discretization.

15002

Uc is the velocity of...

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