二次元直角吸込流の基本特性の測定と数値計算

概要

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The flow in and around two-dimensional right-angled intake has been studied both experimentally and numerically. Pressure distributions on the intake surfaces are measured at various velocity ratios of the intake flow to the main flow, and the basic intake performances, such as the total pressure loss, the cavitation and the drag, are evaluated. It is shown that they are reproduced well by the numerical results with a standard k-ε model of turbulence, while the agreement becomes poorer as the velocity ratio becomes large. It is also demonstrated by the smoke-wire visualization study that the recirculating region formed upstream of the intake flow is reduced as the velocity ratio increases, contributing to the relative decrease in the total pressure loss at large velocity ratios.
社団法人日本機械学会の論文
1992-01-25