minimum surface angle

mao · April 19, 2016, 12:31

hey, i use mesh motion in cfx. and i wanna have a level to check mesh quality after simulation, as a consequence, i chose minimum surface angle as a level, but i am not sure what degree of this variable is ok for guide vanes?
thank you

ghorrocks · April 19, 2016, 18:39

It is problem dependent so there is no universal answer. Single phase incompressible flows are tolerant of poor quality meshes, but free surface flows and flows with shock waves require very high quality meshes.

You have to determine what is acceptable in your case by a sensitivity analysis.

April 19, 2016, 12:31	minimum surface angle	#1
mao New Member mao Join Date: Mar 2016 Posts: 20 Rep Power: 10	hey, i use mesh motion in cfx. and i wanna have a level to check mesh quality after simulation, as a consequence, i chose minimum surface angle as a level, but i am not sure what degree of this variable is ok for guide vanes? thank you

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April 19, 2016, 18:39		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,719 Rep Power: 143	It is problem dependent so there is no universal answer. Single phase incompressible flows are tolerant of poor quality meshes, but free surface flows and flows with shock waves require very high quality meshes. You have to determine what is acceptable in your case by a sensitivity analysis.