How to find the separation point in fluent

caohan · April 8, 2010, 09:54

Hi all
I am a newbie for using fluent, now I am doing a 2D airfoil simulation. Now,as the separation happen,I need to determine the position of separation point. some people said by using wall shear stress can calculate that point, is that right, can somebody explains for me more specificly.

Thanks for all
Han

jack1980 · April 8, 2010, 13:30

One possibility is to look where the wall shear stress is zero.

Plot -> XY Plot
Select: Wall Fluxes ...
Select: Wall Shear Stress
Under Surfaces: select your airfoil

This will generate a xy-plot, in which the y=0 indicates separation. It works for a 2D case (for a 3D it is also possible, not with xy-plot but with a contour plot of Wall Shear Stress).

caohan · April 8, 2010, 13:43

Hi Jack1980
Thank you for your reply, a very clear explanation for me.

jack1980 · April 8, 2010, 13:48

You're welcome, good luck with your simulation!

April 8, 2010, 09:54	How to find the separation point in fluent	#1
caohan Member tom Join Date: Feb 2010 Posts: 46 Rep Power: 16	Hi all I am a newbie for using fluent, now I am doing a 2D airfoil simulation. Now,as the separation happen,I need to determine the position of separation point. some people said by using wall shear stress can calculate that point, is that right, can somebody explains for me more specificly. Thanks for all Han

April 8, 2010, 13:30		#2
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 16	One possibility is to look where the wall shear stress is zero. Plot -> XY Plot Select: Wall Fluxes ... Select: Wall Shear Stress Under Surfaces: select your airfoil This will generate a xy-plot, in which the y=0 indicates separation. It works for a 2D case (for a 3D it is also possible, not with xy-plot but with a contour plot of Wall Shear Stress). mm.abdollahzadeh likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem of running parallel Fluent on linux cluster	ivanbuz	FLUENT	15	September 23, 2017 19:12
How to find lift coefficient by fluent?	winterboy	FLUENT	30	March 21, 2017 19:53
Problems in lauching FLUENT	Lourival	FLUENT	3	January 16, 2008 16:48
locate separation point	Srikanth	FLUENT	0	March 22, 2006 03:07
where to find relevant manual about Fluent on net?	Laiping Zhang	FLUENT	3	April 1, 2001 13:33

April 8, 2010, 13:43	Hi	#3
caohan Member tom Join Date: Feb 2010 Posts: 46 Rep Power: 16	Hi Jack1980 Thank you for your reply, a very clear explanation for me.

April 8, 2010, 13:48		#4
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 16	You're welcome, good luck with your simulation!