MFC: An open-source high-order multi-component, multi-phase, and multi-scale compressible flow solver

Spencer Bryngelson (1) , Kevin Schmidmayer (1) , Vedran Coralic (1) , Jomela Meng (1) , Kazuki Maeda (2) , Tim Colonius (1)

1 Caltech Division of Engineering and Applied Science
2 CTR - Center for Turbulence Research [Stanford]

MFC is an open-source tool for solving multi-component, multi-phase, and bubbly compressible flows. It is capable of efficiently solving a wide range of flows, including droplet atomization, shockbubble interaction, and gas bubble cavitation. We present the 5-and 6-equation thermodynamicallyconsistent diffuse-interface models we use to handle such flows, which are coupled to high-order interface-capturing methods, HLL-type Riemann solvers, and TVD time-integration schemes that are capable of simulating unsteady flows with strong shocks. The numerical methods are implemented in a flexible, modular framework that is amenable to future development. The methods we employ are validated via comparisons to experimental results for shock-bubble, shock-droplet, and shock-watercylinder interaction problems and verified to be free of spurious oscillations for material-interface advection and gas-liquid Riemann problems. For smooth solutions, such as the advection of an isentropic vortex, the methods are verified to be high-order accurate. Illustrative examples involving shock-bubble-vessel-wall and acoustic-bubble-net interactions are used to demonstrate the full capabilities of MFC.

Mots clés: computational fluid dynamics; multi-phase flow; diffuse-interface method; compressible flow; ensemble averaging; bubble dynamics

Domaines: Mécanique des fluides [physics.class-ph]; Modélisation et simulation; Equations aux dérivées partielles [math.AP]

Spencer Bryngelson, Kevin Schmidmayer, Vedran Coralic, Jomela Meng, Kazuki Maeda, et al.. MFC: An open-source high-order multi-component, multi-phase, and multi-scale compressible flow solver. Computer Physics Communications, 2021, 266, pp.107396. ⟨10.1016/j.cpc.2020.107396⟩. ⟨hal-03649400⟩