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Good day, could anyone explain me how can I modify the relaxation factor in Hypermesh CFD? I´m performing a transient simulation.
In the Physics tool go to the Solver Controls section. If you've set Time Marching to Transient in the Physics Models section, you'll see Transient Update Factor. The relaxation_factor value written to the input file is 1 - Update Factor. (So if update factor is 1.0, relaxation factor is 0.0.)
Hi, I would like to know the significance of Transient Update Factor. Does it control how solution progresses within stagger iterations?
The Transient Update Factor works essentially the same as Steady Update Factor. Each time step is treated as a 'mini' steady state run, where convergence should be achieved within each time step to get the time-resolved or time-accurate simulation result. Generally the update factor for transient is 1.0 (translates to relaxation-factor = 0 in the input file itself) but it can be changed.
