付着形素子内流れの数値解析 : 制御ポートのない場合

概要

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In order to get the numerical solution for the turbulent flow region in complex flow accompanied by vortexes in wall attachiment device, the new method was developed so that the calculation is performed by dividing into three regions, that is, turbulent region, transition region and laminar region according to the effect of inertia and viscous forces. On the turbulent region, k-ε turbulent model was used supposing the turbulent effects became large. In the transition region, the equation from which the convection term was eliminated was used supposing the transport effect by the convection term was small. In the laminar region, the equation in which the Reynolds stress term was eliminated from Reynolds equation was used, supposing viscous effect was large. Connecting these three regions well, the distributions of stream line, velocity, turbulent energy, dissipation rate and vorticity were obtained in the whole regions. These results were compares with results measured by tuft method and with pitot tubes, and almost good agreement was obtained.
東海大学の論文