Numerical Analysis of an Axisymmetric Impinging Jet in the Impingement Region : Axial Velocity and Static Pressure Profiles

概要

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An axisymmetric impinging jet onto flat wall has been studied using a numerical model of incompressible viscous steady flow, especially close to the impingement wall. The Navier-Stokes equations are solved in terms of stream function and vorticity with the combined upwind and central finite difference method of an alternating-direction implicit way. Distributions of velocity and pressure of the impinging jet are calculated at several large Reynolds numbers using non-uniform grids in the axial direction of the jet for three kinds of the 'fully developed' velocity profile at the inlet of the impingement region. Calculated distributions of axial velocity and pressure agree well with experimental data of air jets. Further, the flow structures of impinging jets are discussed to study the effect of the inlet velocity on the flow.
東海大学の論文