D135 乱流斑点および乱流楔周辺の斜行 T-S 波の挙動

概要

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This report describes the behaviors of oblique T-S waves generated by n weak wave packet, an isolated turbulent spot and a turbulent wedge, which were produced in the laminar region of a radial liquid film flow. The liquid film flow was formed by a water discharge to the atmosphere from a thin cylindrical gap between a pipe end and a disk surface. The wave packet, turbulent spot and turbulent wedge were created by a pulse-like jet injection into the laminar flow through a small hole of the disk, observed by high-speed photography. It was found that, while phase velocities of oblique T-S waves trailing the wave packet and the turbulent spot equal to that of the ordinary two-dimensional T-S wave, that of the oblique T-S wave around the turbulent edge is about 1.5 times as large as that of the ordinary T-S wave.
日本流体力学会の論文
2000-07-25