LES initial condition

dario91 · September 2, 2015, 15:14

Hello everyone!I am a very beginner with star ccm+, and i have to do a LES of a delta wing. I want to use as initial condition the result of a RANS, how can i do? which is the fastest way?

fluid23 · September 3, 2015, 12:10

Start off with a steady state RANS analysis and let it converge. Stop the file, change your physics continua to reflect your LES setup and select solution > clear solution and uncheck fields option. Then click OK. You now have a file setup for LES, initialized to your steady RANS results that will begin from iteration 1.

September 2, 2015, 15:14	LES initial condition	#1
dario91 New Member Join Date: Sep 2015 Posts: 2 Rep Power: 0	Hello everyone!I am a very beginner with star ccm+, and i have to do a LES of a delta wing. I want to use as initial condition the result of a RANS, how can i do? which is the fastest way?

September 3, 2015, 12:10		#2
fluid23 Senior Member Matt Join Date: Aug 2014 Posts: 947 Rep Power: 18	Start off with a steady state RANS analysis and let it converge. Stop the file, change your physics continua to reflect your LES setup and select solution > clear solution and uncheck fields option. Then click OK. You now have a file setup for LES, initialized to your steady RANS results that will begin from iteration 1. dario91 likes this.

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