Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
473950 | Computers & Mathematics with Applications | 2010 | 10 Pages |
Abstract
We propose a lattice Boltzmann algorithm for an average pressure boundary condition at outlets in pipe flow systems. The advantage of this boundary condition is that only the average pressure is used to recover the non-trivial flow fields. The asymptotic analysis shows that this algorithm works for general curved boundaries and renders a second order accurate velocity and a first order accurate pressure approximation of the incompressible Navier–Stokes solution. Here, we verify the accuracy by numerical simulations of a Poiseuille flow and a less symmetric flow with non-trivial pressure field in channels inclined with arbitrary angle, and flows in a pipe with three outlets.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science (General)
Authors
Zhaoxia Yang,