initialization of flow field in a transient flow calculation

zhengjg · January 15, 2014, 04:23

Hi friends,

I wish to carry out calculation for a transient flow problem using Ansys fluent.
The flow field should be initialized. For my case, the initial values of flow variables such as density, pressure and velocity vary with location, i.e. rho=rho(x, y), p=p(x,y), etc.
How can I specify such an initial condition in fluent?
Is it possible to use the patch or user defined function (UDF) features to get such an initial flow field for some complex problem?

Thanks

bharath · January 15, 2014, 06:01

Do some steady state analysis first and interpolate it with Transient analysis.

January 15, 2014, 04:23	initialization of flow field in a transient flow calculation	#1
zhengjg New Member Jianguo Join Date: May 2011 Posts: 11 Rep Power: 14	Hi friends, I wish to carry out calculation for a transient flow problem using Ansys fluent. The flow field should be initialized. For my case, the initial values of flow variables such as density, pressure and velocity vary with location, i.e. rho=rho(x, y), p=p(x,y), etc. How can I specify such an initial condition in fluent? Is it possible to use the patch or user defined function (UDF) features to get such an initial flow field for some complex problem? Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
compressible flow calculation error using rhoSimpleFoam solver	student4326	OpenFOAM Running, Solving & CFD	7	November 2, 2015 11:34
Moving mesh	Niklas Wikstrom (Wikstrom)	OpenFOAM Running, Solving & CFD	122	June 15, 2014 06:20
Disturbed flow field at outlet boundary (Multiphase flow through pipe)	Michiel	CFX	17	April 21, 2010 10:14
initialization of flow field to enhance convergence rate to steady state	vfico	Main CFD Forum	0	September 9, 2009 11:23
transient temperature field with constant velocity	Törnquist	CFX	0	September 16, 2003 04:22

January 15, 2014, 06:01		#2
bharath Senior Member Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 17	Do some steady state analysis first and interpolate it with Transient analysis.