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4.6.2 Time Discretization

To solve time dependent problems AMIGOS is equipped with the Backward Euler and the Cranck-Nicholson iteration scheme combined with a temporal error estimation and timestep control.

If AMIGOS detects a time dependence of a quantity it checks weather the last calculated time step was accurate enough or if the last calculation has to be rejected restarting the Newton iteration but now with a user defined `rejection-ratio' times smaller time step. The time-estimation algorithm is used to adapt the time-step in dependence of the calculated deviation of the chosen time interpolation (linear or logarithmic).


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Next:4.7 Grid & ElementUp:4.6 Solving MethodsPrevious:4.6.1 Solver
Mustafa Radi

1998-12-11