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Direct Numerical Simulation of Compressible Interfacial Multiphase Flows Using a Mass-momentum-energy Consistent Volume-of-fluid Method by Zhang, Bo; Boyd, Bradley; Ling, Yue is a scholarly article available to read on EtoBox.

What is Direct Numerical Simulation of Compressible Interfacial Multiphase Flows Using a Mass-momentum-energy Consistent Volume-of-fluid Method about?

Compressible interfacial multiphase flows (CIMF) are essential to different applications, such as liquid fuel injection in supersonic propulsion systems. Since high-level details in CIMF are often difficult to measure in experiments, numerical simulation is an important alternative to shed light on the unclear physics. A direct numerical simulation (DNS) of CIMF will need to rigorously resolve the shock waves, the interfaces, and the interaction between the two. A novel numerical method has been developed and implemented in the present study. The geometric volume-of-fluid (VOF) method is employed to resolve the sharp interfaces between the two phases. The advection of the density, momentum, and energy is carried out consistently with VOF advection. To suppress spurious oscillations near shocks, numerical diffusion is introduced based on the Kurganov-Tadmor method in the region away from the interface. The contribution of pressure is incorporated using the projection method and the pressure is obtained by solving the Poisson-Helmholtz equation, which allows the present method to handle flows with all Mach numbers. The present method is tested by a sequence of CIMF problems. The simu

Author

Zhang, Bo; Boyd, Bradley; Ling, Yue

Published

2023

Language

EN