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December 3, 2018, 05:47 |
Adaptive Timestepping problems
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#1 |
New Member
Thomas
Join Date: Mar 2018
Location: Germany
Posts: 18
Rep Power: 8 |
Hello everyone,
I am experiencing problems with adaptive timestepping. My settings are as follows: Maximum Timestep = 0.0005 [s] Minimum Timestep = 0.0001 [s] Option = Number of Coefficient Loops Target Maximum Coefficient Loops = 15 Target Minimum Coefficient Loops = 8 Timestep Decrease Factor = 0.8 Timestep Increase Factor = 1.06 with CONVERGENCE CONTROL: Maximum Number of Coefficient Loops = 20 Minimum Number of Coefficient Loops = 5 Timescale Control = Coefficient Loops CONVERGENCE CRITERIA: Residual Target = 0.00001 Residual Type = RMS I am simulating filling of a bottle using inhomogeneous MUSIG model. Adaptive timestepping was working fine for one fluid. As I changed the fluid, the simulation converged after 5-6 loops, but does not stop the iteration and adapt the timestep. It still calculates all 20 loops, while reaching RMS of 1E-09 and lower and stays at the lowest timestep. Thanks in advance! |
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