Compressible, multiphase semi-implicit method with moment of fluid interface representation

Matthew Jemison, Mark Sussman, Marco Arienti
2014 Journal of Computational Physics  
A unified method for simulating multiphase flows using an exactly mass, momentum, and energy conserving Cell-Integrated Semi-Lagrangian advection algorithm is presented. The deforming material boundaries are represented using the moment-of-fluid method. The new algorithm uses a semi-implicit pressure update scheme that asymptotically preserves the standard incompressible pressure projection method in the limit of infinite sound speed. The asymptotically preserving attribute makes the new method
more » ... applicable to compressible and incompressible flows including stiff materials; enabling large time * Work supported in part by the National Science Foundation under contract DMS 1016381. M. Arienti acknowledges the support by Sandia National Laboratories via the Laboratory Directed Research and Development program. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U. S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. The technical assistance from M. Shashkov regarding the multimaterial moment-of-fluid method is great-fully acknowledged. steps characteristic of incompressible flow algorithms rather than the small time steps required by explicit methods. Shocks are captured and material discontinuities are tracked, without the aid of any approximate or exact Riemann solvers. Simulations of underwater explosions and fluid jetting in one, two, and three dimensions are presented which illustrate the effectiveness of the new algorithm at efficiently computing multiphase flows containing shock waves and material discontinuities with large "impedance mismatch." Interface
doi:10.1016/ fatcat:6eqxpmobpre7lhob4rk74m3y6m