question about 2D Transient flow analysis

redhybrid · July 17, 2013, 09:09

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

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?

July 17, 2013, 09:09	question about 2D Transient flow analysis	#1
redhybrid New Member hsi Join Date: Jul 2013 Posts: 4 Rep Power: 12	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

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July 17, 2013, 10:27		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	For this you have to monitor the drag data for all the time steps (after initial transients) and get the transient data statistics.