What is Velocity U.Beta ?
 

Hi, In CFX-Post, what is Velocity U.Beta ? Thanks very much. Regards, Kushagra

Re: What is Velocity U.Beta ?
 

As far as I know it is the coefficient used in the spatial discretisation scheme (when it is not fixed by the user). You will find .Beta outputs for variables which are included in the transport equations (e.g. volume fractions for 2 phase flow)

latslosh.

Re: What is Velocity U.Beta ?
 

Hi,

The .beta variables are used in the High-resolution differencing scheme as part of its method of minimising over/undershoots.

Glenn Horrocks

Meaning and interpretation of velocity u.beta
 

Still can't understand the meaning of this result. I have a reading on screen on; fluid. Velocity u.Beta Volume Rendering 1

Minimum value 1e-16 and maximum value 1.0.

What does this mean in terms of m/s?

Thanks
Regards

The values of beta has no meaning from the solution point of view.

It is the coefficient used to reconstruct the solution variable away from the nodal values

Phi_x = Phi_node + Beta * Grad(Phi).(r_x - r_node)

where r is the position vector.

Beta = 0 means there the solution is nearly constant, and no need for the gradient contribution anyways.

Beta = 1 means full contribution of the gradient.

The details are more complex, but that should be enough to get the idea.