how to obtain velocity gradient on cylindrical coordinate

rystokes · February 24, 2010, 22:44

Hi,

I am interested in how to obtain the velocity(Vr, Vtheta, Vz) gradient value on cylindrical coordinate (r, theta, z)in CFX please? such as Partial Vr/Partial R, Partial Vtheta/Partial theta and Partial Vz/Partial z?

thanks a lot for your help in advance

rystokes · March 2, 2010, 23:47

Hi,

anyone can help me pls?　I noticed CFX post calculator can provide solution for strain rate on cartesian coordinate, such as first order term, velocity u. gradient x, or second order derivative terms, velocity u. gradient x. gradient x, my question is how can I get the value on cylindrical coordinate, i.e., velocity radial. gradient radial, or velocity radial. gradient radial. gradient radial?

Thanks !

February 24, 2010, 22:44	how to obtain velocity gradient on cylindrical coordinate	#1
rystokes New Member harry Join Date: May 2009 Posts: 29 Rep Power: 16	Hi, I am interested in how to obtain the velocity(Vr, Vtheta, Vz) gradient value on cylindrical coordinate (r, theta, z)in CFX please? such as Partial Vr/Partial R, Partial Vtheta/Partial theta and Partial Vz/Partial z? thanks a lot for your help in advance

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March 2, 2010, 23:47		#2
rystokes New Member harry Join Date: May 2009 Posts: 29 Rep Power: 16	Hi, anyone can help me pls?　I noticed CFX post calculator can provide solution for strain rate on cartesian coordinate, such as first order term, velocity u. gradient x, or second order derivative terms, velocity u. gradient x. gradient x, my question is how can I get the value on cylindrical coordinate, i.e., velocity radial. gradient radial, or velocity radial. gradient radial. gradient radial? Thanks !