Numerical Analysis of Cavitation Processes in a Nozzle with Variable Cross-Section-Reference-Cited by-同舟云学术

Numerical Analysis of Cavitation Processes in a Nozzle with Variable Cross-Section

Published:2013-09 Issue:3 Volume:5 Page:189-206
ISSN:1757-482X
Container-title:The Journal of Computational Multiphase Flows
language:en
Short-container-title:The Journal of Computational Multiphase Flows

Author:

Zagordan N.L.¹,Reviznikov D.L.²,Cherkasov S.G.³

Affiliation:

1. Institution of Russian Academy of Sciences Dorodnicyn Computing Centre of RAS; Vavilov st. 40, 119333 Moscow, Russia

2. Moscow Aviation Institute (National Research University); GSP-3, A-80, Volokolamskoe Shosse 4,125993 Moscow, Russia

3. SSC FSUE Keldysh Research Center; Onezhskaya st. 8, 125438 Moscow, Russia

Abstract

Numerical simulation approach addressing problems of cavitation processes and vapor-liquid two-phase flow dynamics research is discussed. The Navier-Stokes equations, supplemented by transport equation containing source terms, responsible for the interphase exchange, are solved to obtain hydrodynamic characteristics of the system. Mathematical model of unsteady conjugate heat-mass transfer between the bubble and the surrounding liquid is proposed to describe the evolution of a two-component (gas-vapor) bubble. The model takes into account a spatial nonuniformity of the gas and liquid temperature fields as well as nonuniformity of the component concentration inside the bubble. A comparative analysis of the experimental data and computational results is carried out for different regimes of cavitating flows inside a two-dimensional nozzle with variable cross-section. The oscillation characteristics of hydrodynamic parameters and the gas-vapor bubbles behavior are investigated.

Publisher

SAGE Publications

Subject

General Physics and Astronomy,General Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1260/1757-482X.5.3.189

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