平面壁近傍にある鈍い形状物体まわりの流れ特性

概要

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The characteristics of the flow around a normal flat plate and a triangular prism near a plane surface has been investigated experimentally in the Reynolds number range of 10^2 to 3×10^4. From frequency analysis of hot wire signal of the wake flow in a wind tunnel, it was obtained that regular vortex shedding from the normal flat plate and the triangular prism was suppressed for all gaps less than about 0.6 and 0.37 cylinder widths respectively. Investigation of the time-mean distance between two shear layers in the vortex formation region demonstrated that the suppression of vortex shedding for both cylinders occured for gaps between the inner shear layer and the plane surface less than about 0.3 shear layer distances. Flow visualization experiments in a water thank revealed the structural differences of the wakes with and without vortex shedding.
一般社団法人日本機械学会の論文
1983-12-25