Least Square solution algorithm in SU2?

Vino · October 27, 2014, 04:46

Hi,

Can someone tell me what is the method used to solve the least square system(gradient calculation)? I referred the paper what is suggested in last week's you tube video. There two solution methods has been used (Gramm Schimidt and QR decomposition). Which is the one used in SU2 to solve the least square system?

Thanks.!!!

btracey · November 26, 2014, 20:04

Quote:

Originally Posted by Vino

Hi,

Can someone tell me what is the method used to solve the least square system(gradient calculation)? I referred the paper what is suggested in last week's you tube video. There two solution methods has been used (Gramm Schimidt and QR decomposition). Which is the one used in SU2 to solve the least square system?

Thanks.!!!

SU2 uses the QR decomposition to compute the weighted-least-squares solution, with the weights chosen as the inverse squared distance. The relevant code can be found in CEulerSolver::SetPrimitive_Gradient_LS in solver_direct_mean.cpp

Vino · November 27, 2014, 04:25

Thank you very much.!!!

October 27, 2014, 04:46	Least Square solution algorithm in SU2?	#1
Vino Senior Member Vino Join Date: Mar 2013 Posts: 130 Rep Power: 13	Hi, Can someone tell me what is the method used to solve the least square system(gradient calculation)? I referred the paper what is suggested in last week's you tube video. There two solution methods has been used (Gramm Schimidt and QR decomposition). Which is the one used in SU2 to solve the least square system? Thanks.!!!

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November 27, 2014, 04:25		#3
Vino Senior Member Vino Join Date: Mar 2013 Posts: 130 Rep Power: 13	Thank you very much.!!!