Initialization using another simulation result

siw · November 7, 2012, 06:22

Hi,

Is it possible to initialize a simulation using the flowfield from another simulation (which is what I sometime do in CFX)? For example: for the same fluid domain and boundary conditions can I run a DES using a RANS calculated flowfield as the initial guess.

Thanks

Marion · November 7, 2012, 08:15

Hi,
for different geometries you can use the "interpolate" feature in Fluent: File / interpolate...
For the same geometry, I think it is even recommended to start with a RANS converged flow field before running LES. you just switch to LES and transient after your model has converged.
Marion.

FluentStarter · January 10, 2017, 03:50

I tried the interpolation method as well. But when I import my cfx results into Fluent to do the interpolation afterwards i receive a SIGSEV error.

Is there another way to use CFX results to initialize the flow field in fluent?

November 7, 2012, 06:22	Initialization using another simulation result	#1
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 733 Rep Power: 25	Hi, Is it possible to initialize a simulation using the flowfield from another simulation (which is what I sometime do in CFX)? For example: for the same fluid domain and boundary conditions can I run a DES using a RANS calculated flowfield as the initial guess. Thanks

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November 7, 2012, 08:15		#2
Marion Senior Member Marion Join Date: Jul 2012 Location: France Posts: 122 Rep Power: 14	Hi, for different geometries you can use the "interpolate" feature in Fluent: File / interpolate... For the same geometry, I think it is even recommended to start with a RANS converged flow field before running LES. you just switch to LES and transient after your model has converged. Marion.

January 10, 2017, 03:50		#3
FluentStarter Member Join Date: Apr 2014 Location: N/A Posts: 47 Rep Power: 12	I tried the interpolation method as well. But when I import my cfx results into Fluent to do the interpolation afterwards i receive a SIGSEV error. Is there another way to use CFX results to initialize the flow field in fluent?