Turbulence Effect on the Impinging Jet on a Flat Plate

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概要

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• A numerical study is made of the characteristics of turbulent submerged axisymmetric incompressible jets impinging on a flat plate. 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. A two-equation turbulence model provides a turbulent kinetic energy equation and a turbulent energy dissipation equation (k〜ε model). For cells at the wall, kinetic energy is assumed to be parabolic in the viscous sublayer and linear in the fully turbulent region. All computed results are compared with experimental data reported in the literature. The computations are made for nozzle-to-plate distances ranging from 2 to 18 nozzle diameters. The two-equation k〜ε turbulence model results in good predictions of the velocity distributions, pressure, and skin friction. Also the near-wall models for kinetic energy and turbulent shear stress give good predictions of the skin friction coefficients.

• 一般社団法人日本機械学会の論文

著者

• Amano Ryoichi

  Department Of Mechanical Engineering University Of Wisconsin--mi1waukee

関連論文

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• Turbulence Effect on the Impinging Jet on a Flat Plate
• Experimental and Computational Investigation of Triple-rotating Blades in a Mower Deck

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