Setting initial conditions in CFX

k_tafazoli · February 7, 2013, 01:29

Hi, in working on thermal analysis of exhaust valve and seat in CFX through workbench . I place the valve in different positions from the seat and I need to use the last obtained solution in seat and valve and the control volume between them ( which is expanding 1 mm in every step ) from the previous position as the initial condition for the current position, but I don't know how to do that . I'm using workbench and have made my geometry in Ansys Design Modeler and I analyze it in CFX . Can anyone help me on this problem ? Thanks in advance .

ghorrocks · February 7, 2013, 04:18

This sounds like it should be modelled as a true transient simulation with a moving valve, not a sequence of psuedo-steady state cases.

February 7, 2013, 01:29	Setting initial conditions in CFX	#1
k_tafazoli New Member kian Join Date: Feb 2013 Posts: 14 Rep Power: 13	Hi, in working on thermal analysis of exhaust valve and seat in CFX through workbench . I place the valve in different positions from the seat and I need to use the last obtained solution in seat and valve and the control volume between them ( which is expanding 1 mm in every step ) from the previous position as the initial condition for the current position, but I don't know how to do that . I'm using workbench and have made my geometry in Ansys Design Modeler and I analyze it in CFX . Can anyone help me on this problem ? Thanks in advance .

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February 7, 2013, 04:18		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	This sounds like it should be modelled as a true transient simulation with a moving valve, not a sequence of psuedo-steady state cases.