用粒子图像测速法识别气泡流

IF 0.6 4区工程技术 Q4 Engineering

Nuclear Engineering International Pub Date : 1997-11-16 DOI:10.1115/imece1997-0606

Y. Hassan, W. Schmidl, J. Ortíz-Villafuerte

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引用次数: 0

摘要

采用粒子图像测速(PIV)流动显示技术研究了管道流动中上升气泡的形状。为了做到这一点，气泡流的测试体积由声光光束斩波器发出的连续波激光器的脉冲光照射，并通过连接到帧捕获器的四个CCD摄像机进行观察。获取上升气泡的数字图像并对其进行分析以识别其形状。提出了一种基于动态广义霍夫变换(DGHT)的PIV图像气泡二维形状重构方法。

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Bubbly Flow Identification Using Particle Image Velocimetry

The shape of a rising air bubble in a pipe flow is investigated with the Particle Image Velocimetry (PIV) flow visualization technique. To do so, a test volume of bubbly flow is globally illuminated with a pulsed light from a continuous wave laser with an acoustic-optic beam chopper, and is observed with four CCD cameras connected to frame grabbers. A digital image of the rising bubble is acquired and analyzed to identify its shape. A reconstruction method, based on the Dynamic Generalized Hough Transform (DGHT), is described that can determine the two-dimensional shape of a bubble from a PIV image.

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来源期刊

Nuclear Engineering International 工程技术-核科学技术

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Information not localized