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options_relaxation relax_0 relax_1 ...

Relaxation parameters for adjusting unknowns in iterations. This can stabilize the calculation. By example, a relaxation parameter of 0.1 means that the corresponding unknown is now completely updated with the iterative change, but only 10 percent of the change is actually applied in a iteration.

If enough iterations are used, the relaxation parameters with not influence the final solution.

You should specify a relaxation parameter term for each principal unknown which is present in the calculation (see the start of the data part description for a list of principal unknowns; these are velocities, temperature, etc.).

The relaxation is used for all timesteps. See also control_options_relaxation.

tochnog 2001-09-02