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Navier Stokes (2D flow between parallel plates) using coefficient form PDE
Posted 11.04.2019, 14:25 GMT-4 Structural & Acoustics, Fluid & Heat, Equation-Based Modeling 0 Replies
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Hello,
I am trying to simulate incompressible flow between parallel plates by using the coefficient form pde, in order to get hang of modelling using the coeffcient form pde. I have used 3 coefficient form PDEs (one for x-momentum, one for y-momentum and one for continuity). The boundary conditions that I want to set are as follows:
u- given at inlet, 0 on top and bottom walls, not known at outlet v-0 at inlet, top and bottom walls, not known at outlet p- 0 at outlet, not known at inlet or top or bottom wall
I inserted Dirichlet Boundary conditions at 3 boundaries for the 2 equations related with velocity. However, the inbuilt zero flux Boundary condition still exisits at the outlet for both u and v and. Similarly for pressure (it is a dependent variable for the continuity equation), the zero flux boundary condition exists at the 3 boundaries other than outlet. I don't know how to overcome this problem.
Please help me as to how can I disable the zero flux boundary condition at the boundaries where it is not required.
Hello Mihir Parekh
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