107 90°コーナーを回折する衝撃波の可視化
1994 年 14 巻 Supplement2 号 p. 39-42
詳細
1994 年 14 巻 Supplement2 号 p. 39-42
The result of numerical simulation of shock wave diffraction around a 90° corner is visualized by VTR animation. The two-dimensional compressible Euler equation is solved by a finite-difference scheme with high resolution. An adaptive mesh refinement algorithm is adopted to achieve high resolution. The separated shear layer developing from the diffraction edge rolls up to discrete vortices by instability. In the case of Mach number greater than 1.5, these vortices are seen to interact with the secondary shock wave; a branching phenomena of shock wave is clearly observed.
