平板への衝突噴流の直接数値計算と実験値による検証

概要

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The kinetic energy conservation third-order upwind finite difference scheme is used for the convection terms in three-dimensional Navier-Stokes equations to directly simulate the turbulent impinging jet issuing from a round nozzle. The calculated results of mean velocity and turbulent intensity distributions and autocorrelations are compared with experimental data, which are measured using the hot-wire anemometry system. The cell size is roughly six times the Kolmogorovmicroscale; however, calculated turbulent characteristics represent the experimental results fairly well. This means that the simulation well describes the motion of large-scale eddies, which play an important role in the enhancement of heat and mass transfer in the flows. The various features of turbulent impinging jet flow are demonstrated.
一般社団法人日本機械学会の論文
1993-11-25