winglet analysis

cfd_lean · September 18, 2009, 15:00

I am Intended to do CFD analysis on wing with winglets using CFX. I have wind tunnel results. i need to match ,my CFD data to experimental results.

I generated a grid with Icem. I generated def file using CFX pre.

The inlet conditions , known are Dynamic Pressure and free steam mach number ans Reynolds number. I did know the outlet conditions.

Initially i started CFD runs using Velocity magnitude as inlet and atmospheric pressure as outlet. Solution did not converged and failed after 30 iterations. Then I tried by changing outlet condition to static pressure(roughly took 0.95% inlet Ps). Here also i did not get luck. I tried with keeping opening boundary condition at the outlet. Still I did not get any luck.

Let any one can suggest me how to proceed further & what modifications I need to do for setup?

Baldy · September 19, 2009, 00:22

Inlet - Velocity
Outlet - 0 relative pressure

September 18, 2009, 15:00	winglet analysis	#1
cfd_lean New Member kumar Join Date: Sep 2009 Posts: 4 Rep Power: 17	I am Intended to do CFD analysis on wing with winglets using CFX. I have wind tunnel results. i need to match ,my CFD data to experimental results. I generated a grid with Icem. I generated def file using CFX pre. The inlet conditions , known are Dynamic Pressure and free steam mach number ans Reynolds number. I did know the outlet conditions. Initially i started CFD runs using Velocity magnitude as inlet and atmospheric pressure as outlet. Solution did not converged and failed after 30 iterations. Then I tried by changing outlet condition to static pressure(roughly took 0.95% inlet Ps). Here also i did not get luck. I tried with keeping opening boundary condition at the outlet. Still I did not get any luck. Let any one can suggest me how to proceed further & what modifications I need to do for setup?

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September 19, 2009, 00:22		#2
Baldy New Member Join Date: Mar 2009 Posts: 22 Rep Power: 17	Inlet - Velocity Outlet - 0 relative pressure