March 25, 2022 at 3:18 amkiki1Subscriber
topic: Calculation time rationality consultation
key words: solidification&melting model, calculation time estimation
grid size(cells): 6000~7000
general set: transient calculation
Models: solidification&melting ,consider gravity, and use the Boussinesq approximation to deal with convection phenomena
solution methods: system default
Time step set:
Time stepping method: Adaptive
Max Iterations/Time step: 50
reporting interval、profile update interval: 50
Computing resources: CPU: 4-core intel(R)core(TM) i5-9500 [email protected] RAM：8GB
Pre-calculation: It takes 3 days to simulate 5000s.
1. The target is simulated for 3 days (259200s). According to the previous simulation time, if the calculation speed remains unchanged, the calculation is expected to be completed in a total of 155.52 days. Is this reasonable? If not, what is the problem?
2. If the time is reasonable, how to speed up the calculation?March 25, 2022 at 11:21 amRobAnsys EmployeeIt's not a bad first estimate. With 7k cells use 1-2 cores, as I suspect the data passing is going to outweigh the benefit of more compute. Check the solution time scales: time step is determined by the flow (or other scalar) speed and cell size.
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