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running fluent transient simulation

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Old   June 3, 2013, 13:57
Default running fluent transient simulation
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Harshad Lalit
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Hello,

I am trying to run a transient simulation in batch mode.My input file reads:
/file/read-case input.cas

/file/initialize/initialize-flow

/solve/iterate 1000

/file/write-data output.dat


Although this works for a steady calculation, the "iterate" command doesnt work for an unsteady case.Could anybody tell me how to run it for an unsteady case if I want adaptive time-stepping with 1000 iterations and 20 iteration-per-time-step??
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Old   July 2, 2013, 14:33
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Constantine
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Quote:
Originally Posted by harshad88 View Post
Could anybody tell me how to run it for an unsteady case if I want adaptive time-stepping with 1000 iterations and 20 iteration-per-time-step??
Use:
Code:
 
solve/dual-time-iterate 1000 20
To set adaptive time stepping parameters:
Code:
 
solve/set/adaptive-time-stepping
Maybe it is easier to set adaptive time stepping parameters using a GUI interface, saving them in case file and then run in batch mode.
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