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flow past ellipse - difference between theory and comsol's simulation
Posted Dec 25, 2011, 9:21 a.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD) Version 4.2 0 Replies
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Just to start with some basic simulation, I did flow past elliptical cylinder, i.e. ellipse (2D) and measured Cd and Cl . I made rectangular fluid domain, elliptical solid (subtracted) wall. Inflow I gave laminar and outflow p=0, upper and bottom ones are walls. I have calculated coefficients using reacf(u)/(rho*v^2*L). My values are not matching with the theoritcal values.
More over if I change the size of fluid rectangle, everytime I get different values. It never matches with the theory. even mesh setting with extremely fine gives very wrong results.
For comparison I used
S.C.R. DENNIS1 and P.J.S. YOUNG2
Steady flow past an elliptic cylinder inclined to the stream
Journal of Engineering Mathematics 47: 101–120, 2003.
Please some one tell me what mistake I am doing.
Thanks
Hello Siva Kumar Manickam
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