Steady State Problem Initialization

Julian121 · October 1, 2018, 14:29

Can a steady state problem be initialized with another steady state solution to speed up convergence? I have difficulty to obtain convergence close to stall operating point. Can it improve the speed of convergence?

Gert-Jan · October 2, 2018, 07:36

Certainly it can improve initialization.
Using the solver manager, you can interpolate any result file on any definition file. Interpolate a car on a boat. CFX will do. If it is wise to do, that is a question.
The more the interpolated initial guess looks like the final result, the better.

October 1, 2018, 14:29	Steady State Problem Initialization	#1
Julian121 Senior Member Join Date: Aug 2012 Posts: 269 Rep Power: 15	Can a steady state problem be initialized with another steady state solution to speed up convergence? I have difficulty to obtain convergence close to stall operating point. Can it improve the speed of convergence?

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October 2, 2018, 07:36		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,901 Rep Power: 28	Certainly it can improve initialization. Using the solver manager, you can interpolate any result file on any definition file. Interpolate a car on a boat. CFX will do. If it is wise to do, that is a question. The more the interpolated initial guess looks like the final result, the better.