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my code is get steady but after that is oscillate

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October 1, 2012, 08:30	my code is get steady but after that is oscillate	#1
hnemati Member SAM Join Date: Apr 2012 Posts: 74 Rep Power: 14	Hi I am running DNS code in a pipe with variable density with constant heat flux. I run the code and it gets steady and the velocity and shear stress is constant for a long time but after that it start to oscillate. is anybody here to help me in this issue?

October 2, 2012, 06:01		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	Do you expect your flow to be laminar or turbulent?

October 2, 2012, 06:04		#3
hnemati Member SAM Join Date: Apr 2012 Posts: 74 Rep Power: 14	Hi, Laminar.

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