using forces for geting drag and lift force magnitude?

510_ · October 21, 2010, 01:23

Hi guys,

I am looking for the drag and lift forces on solar panel in a wind tunnel.

I've been looking at postprocessing forces but I couldn't get it to work.
I put forces function on my controlDict, do i need to change any other files?

What are the command use to find these forces? i've been using foamCalc but it keep comming with

Quote:

Create time

Create mesh for time =0

Time=0
No P

Time=0.25
No P

Time=0.5
No P

End

What do I miss?

any pointers would be appreciated

harishg · October 26, 2010, 23:21

It seems that the field P (pressure?) is not saved at each of the time instants. Check that the required fields are written to the folder.

510_ · October 28, 2010, 12:42

I've got it figured out, not to sure what was the problem but.. I was just kept dwelling on it and got the figures.. thanks for the reply!

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October 26, 2010, 23:21		#2
harishg Senior Member N/A Join Date: Mar 2009 Posts: 189 Rep Power: 17	It seems that the field P (pressure?) is not saved at each of the time instants. Check that the required fields are written to the folder.

October 28, 2010, 12:42		#3
510_ New Member Stanley Aryanto Join Date: Sep 2010 Posts: 2 Rep Power: 0	I've got it figured out, not to sure what was the problem but.. I was just kept dwelling on it and got the figures.. thanks for the reply!