Time and direction varying liftDir in a forceCoeffs file

HakikiCanakkaleli · October 9, 2012, 08:32

Hi,

I kindly want to ask whether I can add a .csv data file for the liftDir object in the forceCoeffs file or not?

Code:

liftDir      (0 0 1);

To be more precise, I would like to write something (instead of (0 0 1) as can be seen above) that connects a .csv data file which includes different directions of lift coefficient for different time steps with the lift coefficient direction specified in the forceCoeffs.

Apologizes if there are some other pages relevant to this issue; however, I couldn't find any.

Many thanks in advance.

kev4573 · October 9, 2012, 15:34

I'm not aware of any built in functionality to accomplish this directly.

One possible solution would be to interface with your csv file using a runtime compiled code snippet, which could make this vector a function of time.

The simpliest solution would probably be to just write out the force components at every time step and post process them to recompute the coefficient based on your changing lift direction.

HakikiCanakkaleli · October 20, 2012, 12:01

Thanks very much.

October 9, 2012, 08:32	Time and direction varying liftDir in a forceCoeffs file	#1
HakikiCanakkaleli Senior Member Canakkale Dardanelspor Join Date: Aug 2012 Posts: 135 Rep Power: 13	Hi, I kindly want to ask whether I can add a .csv data file for the liftDir object in the forceCoeffs file or not? Code: liftDir (0 0 1); To be more precise, I would like to write something (instead of (0 0 1) as can be seen above) that connects a .csv data file which includes different directions of lift coefficient for different time steps with the lift coefficient direction specified in the forceCoeffs. Apologizes if there are some other pages relevant to this issue; however, I couldn't find any. Many thanks in advance.

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October 9, 2012, 15:34		#2
kev4573 Senior Member Kevin Smith Join Date: Mar 2009 Posts: 104 Rep Power: 17	I'm not aware of any built in functionality to accomplish this directly. One possible solution would be to interface with your csv file using a runtime compiled code snippet, which could make this vector a function of time. The simpliest solution would probably be to just write out the force components at every time step and post process them to recompute the coefficient based on your changing lift direction.

October 20, 2012, 12:01		#3
HakikiCanakkaleli Senior Member Canakkale Dardanelspor Join Date: Aug 2012 Posts: 135 Rep Power: 13	Thanks very much.