Thermokinetic model of compressible multiphase flows

TL;DR

This paper introduces a new thermokinetic model for simulating compressible multiphase flows of real gases, capable of handling phase transitions and various equations of state, advancing the simulation of complex fluid behaviors.

Contribution

The paper presents a novel kinetic theory model that incorporates arbitrary equations of state and simulates liquid-vapor phase transitions in compressible multiphase flows.

Findings

Model handles a wide range of real-gas thermodynamics

Enables simulation of phase transitions in super- and subcritical states

Compatible with various equations of state

Abstract

We present a novel approach to kinetic theory modeling enabling the simulation of a generic, real gas presented by its corresponding equation of state. The model is based on mass, momentum and energy conservation, and unlike the lattice Boltzmann models enables simulations of fluids exhibiting a liquid-vapor phase transition in both super- and subcritical states. In this new kinetic theory,an arbitrary equation of state can be introduced through rescaling the discrete particle velocities.Different benchmarks associated with real-gas thermodynamics illustrate that the proposed scheme can handle a wide range of compressible multiphase flows.