C343 流力的形状の制御

概要

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There are many cases that a flow past a body with a symmetric shape has a different kind of symmetry from its configuration. This symmetry is usually induced by a uniform flow direction, or instability of the flow field. And also, we can observe a symmetric flow structure in a flow past a body with an asymmetric shape. These symmetries determine a characteristic of the flow field, and it seems that a body placed in a flow field is classable by a symmetry appeared in a flow field. Recently, novel techniques of flow control have been developed, and several flow fields can be designed using such techniques. These viewpoints may add a new criterion to a methodology of a design based on a geometrical configuration. That is, it will be possible to make a class of equivalent fluid-dynamic shapes without changing the original geometrical configuration. In this paper, we will show an example in flow past a sphere with a local lateral blowing.
日本流体力学会の論文
2000-07-25