Code Verification for Multiphase Flows Using the Method of Manufactured Solutions

摘要: Code verification is the process of ensuring, to degree possible, that there are no algorithm deficiencies and coding mistakes (bugs) in a computational fluid dynamics (CFD) code. In order perform code verification, Method Manufactured Solutions (MMS) rigorous technique can be used absence exact solution problem. This work addresses major aspects performing for multiphase flow codes using open-source, MFIX which employs staggered-grid modified SIMPLE-based algorithm. performed on 2D 3D, uniform stretched meshes incompressible, steady unsteady, single-phase two-phase flows two-fluid model MFIX. Currently, algebraic gas-solid exchange terms neglected as these tested via unit-testing. The no-slip wall, free-slip pressure outflow boundary conditions verified 3D flows. A newly-developed curl-based manufactured divergence free introduced. Temporal accuracy during unsteady calculations also assessed. Techniques introduced generate solutions satisfy divergence-free constraint incompressible governing equations. with constraints due well derived verify conditions. Use staggered grid numerical computations requires specific issues addressed while MMS-based verification. Lessons learned this exercise discussed.Copyright © 2014 by ASME