Numerical simulation of cavitating flows with homogeneous models

Numerical Simulation of Cavitating Flows in Diesel Injectors by a Homogeneous Equilibrium Modeling Approach

Due to excessive stress in the orifice, cavitation occurs in high-pressure Diesel injectors. As experiments are very hard to manage for injection conditions (small-scaled, high-speed flow), a numerical model seems to be the right tool to get a better understanding of the flow features inside and at the exit of the injector nozzle. The purpose of this paper is to present a simulation code based ...

Towards Numerical Simulation of Cavitating Flows in Complex Geometries

This paper discusses our efforts to simulate large systems of bubbles in complex geometries, with specific application to modeling cavitation instabilities. An important unstable regime is the transition from sheet-to-cloud cavitation (SCC). Experiments performed by Callenaere et al. (2001) highlight the unsteady flow structures of SCC, which is characterized by unstable regions of vapor bubble...

A Numerical Investigation of Unsteady Bubbly Cavitating Nozzle Flows

The effects of unsteady bubble dynamics on cavitating flow through a converging-diverging nozzle are investigated numerically. A continuum model that couples the Rayleigh–Plesset equation with the continuity and momentum equations is used to formulate unsteady, quasi-one-dimensional partial differential equations. Flow regimes studied include those where steady-state solutions exist, and those ...

Numerical Investigation for Steady and Unsteady Cavitating Flows

Dynamic Load Balancing for the Parallel Simulation of Cavitating Flows

This paper deals with the parallel numerical simulation of cavitating flows. The governing equations are the compressible, time dependent Euler equations for a homogeneous two-phase mixture. These equations are solved by an explicit finite volume approach. In opposite to the ideal gas, after each time step fluid properties, namely pressure and temperature, must be obtained iteratively for each ...