分岐管を伝ぱする衝撃波の数値解析 : 衝撃波面における非一様性の発生と一様化の過程

概要

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In this paper, the generating process and the diminishing process of the nonuniformity regarding the strength and the shape of the shock wave front propagating through branched ducts were explored by numerical simulation. Computations were carried out by solving the two-dimensional compressible Navier-Stokes equations by using the total variation diminishing (TVD) scheme. Computations were performed for six types of branch (90° branch, 1/2 size 90° branch, T-shape (1/1,1/2,1/3 size) branch, 45° branch) and two incident shock Mach numbers (M_s=1.3,2.0). The flow field were numerically visualized by the pressure and vorticity contours, velocity vectors, pressure distributions on the walls and time histories of the pressure contours on the walls. The mechanism of the generating process and the diminishing process of the nonuniformity of propagating shock front was clarified.
一般社団法人日本機械学会の論文
1998-11-25