旋回流を伴った円筒管内流れの数値計算 : 層流の場合

概要

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This paper is a report of the numerical calculation on the formation of recirculation zone in the circular duct flow with swirling flow. The swirling flow is very important for the performance of the furnace and combuster. Some numerical computations and visualized experiments have been perfomed at Reynolds numbers up to 1000 in various flow for the swirl angle θ=30゜, 45゜and 60゜. Numerical solutions are obtaind by the difference method including the up-wind difference scheme for the convection term of basic equation and indicate reasonable agreement with the experimental results by the tuft method. These investigations have made clear about stream lines, equi-vorticity lines, velocity distributions, and the size, location and shape of recirculation zone for various Reynolds numbers, flow rate ratios and swirl angles.
東海大学の論文