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July 8, 2013, 05:52 |
Problem with maximum number of Timesteps
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#1 |
New Member
Martin Möller
Join Date: May 2013
Location: Jena, Germany
Posts: 11
Rep Power: 13 |
Hello and good morning,
I have set up a 2 Phase simulation (there is somewhere another post about the exact settingshttp://www.cfd-online.com/Forums/cfx...tml#post424961) As ghorrocks suggested in that post, i changed the timestep settings now the 2 Phase simulation works as intended. but now there is a new problem. I need to simulate not only the behavior until something happens but a timesweep of at least 5-10 seconds. The problem is because of the Timestepping settings for about 2 seconds of simulation cfx needs about 1e5 timesteps, and at this number of timesteps it exits with an error code (something like maximum number of timesteps reached) and also erases the data up to this point. (well maybe there is a backup but as my HDD crashed after the error it was erased becaus of linux HDD repair) So here is my question, is there a way to heigthen the number of timesteps while using adaptive calculations or is there a way to run the simulation step by step (also 1e5 timesteps and then the next 1e5 etc.) and is there a way to write a batch that commands ansys to do so. My Problem is that is that i do not see a way to clearly define it, because of the adaptive timestepping there is not really a way to know the time when it reaches 1e5 timesteps Ps: I'm calculating with the Academic research package (maybe its dependend on the license) |
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