|March 20, 2012, 16:03||
Another High Drag coefficient question...Sorry
Join Date: Feb 2012
Posts: 5Rep Power: 7
I'm using FLUENT to simulate vortex shedding from an NREL S809 wind turbine blade at angles of attack around 90degrees.
My flow conditions are highly turbulent (Re numbers around 2e6) and I am using the k-w SST model model. I am using time step size 0.05, with 500 steps, and 20 iterations/step.
My drag coefficient values are between 2.5 and 3.5, and my lift coefficients are both sides of 0 (they can't seem to decide if the airfoil is going up or down).
I am just wondering where I might be going wrong with this. My thoughts are that it is due to my meshing, and I am not sure what my y+ value is (don't quite know how to get it...I am relatively new to cfd)
Any help would be really really appreciated...my thesis is due on monday and I have been struggling with this for a while!
|coefficient, drag, fluent 12, lift, vortex shedding|
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