A DISCONTINUOUS GALERKIN FINITE ELEMENT METHOD FOR MULTIPHASE VISCOUS FLOW

作者：Whiteley J P^*

来源：SIAM Journal on Scientific Computing, 2015, 37(4): B591-B612.

DOI：10.1137/14098497X

• multiphase flow
• discontinuous Galerkin finite element
• Stokes flow
• hyperbolic PDEs

Multiphase viscous flow is usually modeled by a coupled system of differential equations comprising hyperbolic partial differential equations describing the evolution of the volume fraction of each phase and elliptic partial differential equations describing quasi-static force balances. A discontinuous Galerkin finite element method is derived for this system of equations by appealing to conservation of flux and stress of each phase across element boundaries. One-and two-dimensional examples are used to demonstrate (i) the long-time stability of this method for problems where sharp gradients in solution variables develop as time evolves and (ii) the superiority of this technique over the continuous Galerkin finite element method for these exemplar problems.

• 出版日期2015