Drag over Ahmed body
Hi all
I am simulating flow over Ahmed body in 2D. I want to calculate four drags front nose , the drag at the slant surface the back, the back drag and the total drag. I want to ask that do I need to specify different reference area (or depth , I am not sure) for each of the drag values. If yes, what reference area should I take. Remember that I am doing 2D! N.B The values are not comparable with the standard graph of Drag coeffcients available for Ahmed body at different back angles! Regards |
Hi!
check this out: http://www.cfd-online.com/Forums/flu...hmed-body.html For drag coefficient calculation, have a look inside the Fluent manual, how the area in 2D is calculated. As far as I know, you have to set the reference area different for every value... Just set different values and compute the coefficients... and you will see the influence... Ralf |
Well the mesh is structures. All the results, vel profile, stream lines are correct. The only problem is the area. In 2D I dont know how to specify the area for each individual wall!
Fluent manual didnot help |
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