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Old   February 16, 2002, 07:21
Default Drag, lift
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If I expose a 'body' to flow, how can I, using CFD find the drag, lift and CD?

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Old   February 18, 2002, 11:41
Default Re: Drag, lift
Kunal Jain
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just refer to paper by Horio "Numerical Simulation of cohesive powder behavior in a fluidized bed" in Chem. Engg. Science

i am doing lagrangian-eulerian simulations and i have a small piece of code which if u need i shall be more than happy to email you.
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Old   February 18, 2002, 11:59
Default Re: Drag, lift
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Lift is easier to calculate,then moments and drag is the most difficult to calculate. Drag is nothing but the wall shear sress integrated over the surface. For example consider a flat plpate of length L and thickness b,then the drag would be b times the integral of the wall shear stress along the flow direction over the plate length(from 0 to L). Drag coefficient is drag/(dynamic head times the area). What is your geometry BTW? Ref. to any standard text book on fluid dynamics. In order to calculate the shear stress,you need the velocity profile. Do you have the velocity profiles? gita
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