| Author | Message | ||
     Achariya (jam_acha) Member Username: jam_acha Post Number: 4 Registered: 03-2009 |
Dear Dr. Nelson I want to simulate some liquids (ex. benzene at atmospheric pressure and 25 C, it had density = 876 kg/m^3,viscosity = 6.03e-4 Pa.s ) by The Navier-Stokes equation for steady incompressible flow in two dimensions. I try applied from viscous.pde then I have question : 1. How to set definition and equations? (my domain is a unit square) 2. I should chose M=? (in pressure equation) 3. Can I chose M as dens*L? If yes, I should chose L=? Why? Please help me, thank you. | ||
| Marek Nelson (mgnelson) Moderator Username: mgnelson Post Number: 127 Registered: 07-2007 |
Unless the size of the fluid sample is very small, the Navier-Stokes equations will probably be unsuccessful due the the very low viscosity. You may want to consider an inviscid formulation such as the stream function model. See the example "Airfoil.pde" or the viscous extension in "Buoyant.pde" (in the same folder as "Viscous.pde"). I would also suggest looking at Prof Backstrom's book "Simple Fields of Physics by FEA". A link to his website is provided on our bookstore at www.pdesolutions.com/bookstore.html . |