LES of Cavitating Nozzle and Jet Flows

Conference paper (2018)

Authors

S. Hickel Aerodynamics - Aerospace Engineering , Technische Universität München
F Orley Technische Universität München
MS Mihatsch Technische Universität München
SJ Schmidt Technische Universität München
Research Group
Aerodynamics (Aerospace Engineering) (TU Delft)
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Published Date

2018

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Aerodynamics

Abstract

We present an Eulerian three-component two-phase model for the large-eddy simulation (LES) of the cavitating flow within liquid-fuel injectors and the primary atomization of injected fuel jets. The model is applied to a generic nozzle and jet flow at different cavitation numbers and Reynolds numbers. We find that the LES correctly reproduce experimentally observed cavitation effects. Cavitation collapse events near the exit plane of the nozzle increase the turbulence level, perturb the liquid-gas interface, and enhance the jet breakup.