Initial field from .csv-file

MAHAM · August 24, 2015, 07:41

Hello Community,

I have the following issue:

I want to conduct a multiphase flow analysis fo which the initial conditions come from a code other than CFX. Meaning I do have pressure, temperature, velocity and volume fraction fields which I would like to interpolate onto the mesh I created for the CFX-analysis as initial conditions. I could export those fields as a .csv file and would like to feed them to CFX in order to make use of its own interpolator. So far I haven't found a solution to this anywhere.
The *Help* hasn't been of much help. Is anybody aware of such a possibility or could point me into a direction?
Thanks in advance,
Max

ghorrocks · August 24, 2015, 09:21

You can write a user fortran routine to do this. ANSYS support probably (or maybe hopefully) has some examples of how to do this.

Also a CEL 3D interpolation function can do it but you will not be able to pass a large amount of data in this way.

Opaque · August 24, 2015, 09:50

I assume you are doing an accurate transient simulations, correct ?

If you import your .csv file into CFX-Pre, and use a CEL expression for the variables in the file as initial guess, does it work ? It should.

ghorrocks · August 24, 2015, 19:20

Good point - see if the profile data thing works for you.

MAHAM · September 24, 2015, 09:37

Thank you. That did exactly what I intended.

August 24, 2015, 07:41	Initial field from .csv-file	#1
MAHAM New Member Join Date: Oct 2012 Posts: 2 Rep Power: 0	Hello Community, I have the following issue: I want to conduct a multiphase flow analysis fo which the initial conditions come from a code other than CFX. Meaning I do have pressure, temperature, velocity and volume fraction fields which I would like to interpolate onto the mesh I created for the CFX-analysis as initial conditions. I could export those fields as a .csv file and would like to feed them to CFX in order to make use of its own interpolator. So far I haven't found a solution to this anywhere. The Help hasn't been of much help. Is anybody aware of such a possibility or could point me into a direction? Thanks in advance, Max

August 24, 2015, 09:50		#3
Opaque Senior Member Join Date: Jun 2009 Posts: 1,880 Rep Power: 33	I assume you are doing an accurate transient simulations, correct ? If you import your .csv file into CFX-Pre, and use a CEL expression for the variables in the file as initial guess, does it work ? It should. MAHAM likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cannot run the code properly: very large time step continuity error	crst15	OpenFOAM Running, Solving & CFD	9	December 14, 2014 19:17
Moving mesh	Niklas Wikstrom (Wikstrom)	OpenFOAM Running, Solving & CFD	122	June 15, 2014 07:20
pimpleFoam: turbulence->correct(); is not executed when using residualControl	hfs	OpenFOAM Running, Solving & CFD	3	October 29, 2013 09:35
Version 15 on Mac OS X	gschaider	OpenFOAM Installation	113	December 2, 2009 11:23
Differences between serial and parallel runs	carsten	OpenFOAM Bugs	11	September 12, 2008 12:16

August 24, 2015, 09:21		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	You can write a user fortran routine to do this. ANSYS support probably (or maybe hopefully) has some examples of how to do this. Also a CEL 3D interpolation function can do it but you will not be able to pass a large amount of data in this way.

August 24, 2015, 19:20		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Good point - see if the profile data thing works for you.

September 24, 2015, 09:37		#5
MAHAM New Member Join Date: Oct 2012 Posts: 2 Rep Power: 0	Thank you. That did exactly what I intended.