Relaxation factor
Good day, could anyone explain me how can I modify the relaxation factor in Hypermesh CFD? I´m performing a transient simulation.
Best Answer
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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.)
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Altair EmployeeAnswers
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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.)
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Hi, I would like to know the significance of Transient Update Factor. Does it control how solution progresses within stagger iterations?
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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.
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