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RESEARCH PAPERS

Numerical Study of Turbulent Axisymmetric Jets Impinging on a Flat Plate and Flowing Into an Axisymmetric Cavity

[+] Author and Article Information
R. S. Amano

Department of Mechanical Engineering, University of Wisconsin—Milwaukee, Milwaukee, Wis. 53201

H. Brandt

Department of Mechanical Engineering, University of California at Davis, Davis, Calif. 95616

J. Fluids Eng 106(4), 410-417 (Dec 01, 1984) (8 pages) doi:10.1115/1.3243139 History: Received February 16, 1983; Online October 26, 2009

Abstract

A numerical study is made of the characteristics of turbulent submerged axisymmetric incompressible jets impinging on a flat plate and flowing into an axisymmetric cavity. The purpose of the study is to obtain a better understanding of the behavior of a fluid jet used to cut solid materials. In the computations a hybrid finite difference method is used to solve the full Navier-Stokes equations for an incompressible submerged jet with the k ∼ ε turbulence model. All computed results are compared with experimental data reported in the literature. For the case of the jet impinging on a flat plate, the computations are made for nozzle-to-plate distances ranging from 2 to 40 nozzle diameters. For the jet flowing into an axisymmetric cavity, computations are made for cavity depths ranging from 0 to 60 nozzle diameters. The use of the k ∼ ε turbulence model results in good predictions of the velocity, pressure, and skin friction distributions. The near-wall models for the kinetic energy and turbulent shear stress give good predictions of the skin friction coefficients.

Copyright © 1984 by ASME
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