Starting a URANS computation from RANS result file

AS_Aero · August 30, 2018, 04:38

Hi
I am trying to start a case with transient simulation (URANS) which ran for 1000 Iterations in RANS and I have the result file. From this I want to start my URANS simulation. Can someone tell me where I should give this RANS result file as input ?

I have this job Submission file where there is a command line for CFX Arguments
CFXARGS = "-def filename.def -ccl fileneame.ccl -double -size-mms 2.0"

Should I insert the result file here as well ?
Since I give the result file from RANS as input I dont have to initialize the URANS domain right ?

Kindly let me know what is the process.

Lance · August 30, 2018, 04:51

If your result file is called resultfile.res then add the following arguments (see manual)
-initial-file resultfile.res
or
-continue-from-file resultfile.res

no need for initialization if you use a .res or .trn file as initial values.

AS_Aero · August 30, 2018, 06:31

Perfect Thanks a lot

ghorrocks · August 30, 2018, 07:29

For future reference: For just about any command line tool if you go "<executable> -help" it will list all the available options for the tool.

Alternately, in the CFX documentation there is a section on command line tools which describes all the options with additional detail.

August 30, 2018, 04:38	Starting a URANS computation from RANS result file	#1
AS_Aero Senior Member Join Date: Mar 2013 Location: Germany Posts: 357 Rep Power: 14	Hi I am trying to start a case with transient simulation (URANS) which ran for 1000 Iterations in RANS and I have the result file. From this I want to start my URANS simulation. Can someone tell me where I should give this RANS result file as input ? I have this job Submission file where there is a command line for CFX Arguments CFXARGS = "-def filename.def -ccl fileneame.ccl -double -size-mms 2.0" Should I insert the result file here as well ? Since I give the result file from RANS as input I dont have to initialize the URANS domain right ? Kindly let me know what is the process.

August 30, 2018, 07:29		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	For future reference: For just about any command line tool if you go "<executable> -help" it will list all the available options for the tool. Alternately, in the CFX documentation there is a section on command line tools which describes all the options with additional detail. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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August 30, 2018, 04:51		#2
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	If your result file is called resultfile.res then add the following arguments (see manual) -initial-file resultfile.res or -continue-from-file resultfile.res no need for initialization if you use a .res or .trn file as initial values.

August 30, 2018, 06:31		#3
AS_Aero Senior Member Join Date: Mar 2013 Location: Germany Posts: 357 Rep Power: 14	Perfect Thanks a lot