Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
flow past ellipse - difference between theory and comsol's simulation
Posted 25.12.2011, 09:21 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD) Version 4.2 0 Replies
Please login with a confirmed email address before reporting spam
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
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.