可視化情報学会誌
Online ISSN : 1884-037X
Print ISSN : 0916-4731
ISSN-L : 0916-4731
ビームスキャニングを利用した画像処理法による3次元空間内の2成分流速計測
牛島 省田中 伸和
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ジャーナル フリー

1992 年 12 巻 1Supplement 号 p. 51-54

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An image processing technique based on particle-tracking has been developed to obtain instantaneously two components of velocity on many of the sections in three-dimensional space. The tracer particles in a semicylinder tank were visualized on several horizontal sections by means of parallel laser-light sheets generated from a scanning laser beam. The movements of the particles were recorded by a high-speed video system synchronized with the scanning. Since the obtained vectors were interpolated at the grid points on boundary-fitted coordinates (BFC), the derivation of vorticities were conveniently carried out in the transformed field of the BFC. As a result, the two-dimensional aspects of the complicated flow were captured over three-dimensional space.

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