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-   -   question about 2D Transient flow analysis (https://www.cfd-online.com/Forums/fluent/120919-question-about-2d-transient-flow-analysis.html)

redhybrid July 17, 2013 09:09
question about 2D Transient flow analysis
 
Hi everyone,

I am new to Ansys fluent. I have a question about the Transient flow simulation in fluent, how can I compute the average Cd(drag coefficient) in transient flow? Because in Report->Force it use last Cd to calculate the pressure force not the average Cd value.

I am using SST k-omega with PISO

Thank you

Far July 17, 2013 10:27
For this you have to monitor the drag data for all the time steps (after initial transients) and get the transient data statistics.

redhybrid July 17, 2013 13:26
Quote:
Originally Posted by Far (Post 440334)
For this you have to monitor the drag data for all the time steps (after initial transients) and get the transient data statistics.

Thanks for reply Far, you mean get the transient data statistics by surface integration? I still dont understand how to monitor the drag data?


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