Stn frame and radial velocity component in NREL

mohammad · October 24, 2011, 06:00

Dear all,
I have simulated a NREL wind turbine and run it with CFX.
The rotational axis and the wind direction along y but the vector of rotation is "-Y". Also, the blade is along Z axis. the domain is rotating by -72 rpm.

I want to know how i can get the value radial component of the velocity on the blade surface.
"Velocity W" or "Velocity in Stn Frame W" ???/
and generally what is meaning of Stn Frame ????

tnx

Graham81 · October 25, 2011, 11:13

Stn stands for stationary, this would be the absolute velocity. The other is relative to your rotating coordinate system, ie to that minus $r \cdot \omega$

October 24, 2011, 06:00	Stn frame and radial velocity component in NREL	#1
mohammad Senior Member mohammad Join Date: Dec 2010 Location: UK Posts: 246 Rep Power: 17	Dear all, I have simulated a NREL wind turbine and run it with CFX. The rotational axis and the wind direction along y but the vector of rotation is "-Y". Also, the blade is along Z axis. the domain is rotating by -72 rpm. I want to know how i can get the value radial component of the velocity on the blade surface. "Velocity W" or "Velocity in Stn Frame W" ???/ and generally what is meaning of Stn Frame ???? tnx

October 25, 2011, 11:13		#2
Graham81 Member Join Date: Dec 2009 Posts: 57 Rep Power: 17	Stn stands for stationary, this would be the absolute velocity. The other is relative to your rotating coordinate system, ie to that minus $r \cdot \omega$ amirhnp likes this.

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