Turbulence initialization!!!

Akanksha90 · June 6, 2017, 05:12

What is turbulence initialization only? How is it different from the turbulence applied for the whole simulating time? I tried to compare the results with laminar and I found them exact! Then what is the use of this initialization only?
Thanks

venturi · June 6, 2017, 06:47

The numerical methods need an initial guess, either transient or stationary. That's why you need initialization values for the turbulence.

SPH_CFD · June 6, 2017, 07:00

Quote:

Originally Posted by Akanksha90

What is turbulence initialization only? How is it different from the turbulence applied for the whole simulating time? I tried to compare the results with laminar and I found them exact! Then what is the use of this initialization only?
Thanks

If you use FLUENT, hybrid scheme for initialization is the best way. If you don't have information and cannot use hybrid, use value from inlet. This is just a "guess" for numerical solution

June 6, 2017, 05:12	Turbulence initialization!!!	#1
Akanksha90 New Member Akanksha Rawat Join Date: Apr 2014 Posts: 29 Rep Power: 12	What is turbulence initialization only? How is it different from the turbulence applied for the whole simulating time? I tried to compare the results with laminar and I found them exact! Then what is the use of this initialization only? Thanks

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June 6, 2017, 06:47		#2
venturi New Member D. N. Venturi Join Date: Jan 2013 Location: Brazil Posts: 25 Rep Power: 13	The numerical methods need an initial guess, either transient or stationary. That's why you need initialization values for the turbulence.