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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Atomization and Sprays
Импакт фактор: 1.737 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v9.i3.20
pages 255-276

A FULLY COMPRESSIBLE, TWO-DIMENSIONAL MODEL OF SMALL, HIGH-SPEED, CAVITATING NOZZLES

David P. Schmidt
Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
Christopher J. Rutland
Engine Research Center, University of Wisconsin−Madison, Madison, Wisconsin, 53706, USA
Michael L. Corradini
Engine Research Center and Engineering Physics, University of Wisconsin, Madison, Wisconsin, USA

Краткое описание

A numerical model that treats liquid and vapor as a continuum has been constructed for predicting small-scale, high-speed, cavitating nozzle flow. In order to model extremely high pressures, the compressibility of both phases has been included in the scheme, and a third-order shock-capturing technique was applied to the continuity equation to capture sharp jumps in density. In addition, a boundary-fitted mesh was used to treat different nozzle geometries. The scheme has been run with very high upstream pressures and with a liquid-to-vapor density ratio of 10,000:1. The model results have been compared to experimental measurements of single bubble collapse. Results are also presented for rounded and sharp nozzle entrances with varying upstream pressures. The model successfully predicted coefficient of discharge and exit velocity for a variety of nozzle geometries.


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