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	Three-dimensional bubble deformation measured by double shadow images in dilute bubbly flow
	Zhu Xuecheng ; Luo Rui ; Yang Xianyong
	2010-05-11 ; 2010-05-11
关键词	Practical Theoretical or Mathematical/ bubbles deformation flow visualisation image processing mechanical engineering computing/ three-dimensional bubble deformation double shadow images technique dilute bubbly flow image processing techniques epipolar geometry constraint three-dimensional bubble shape ellipsoidal projection contours dual-space theory error analysis/ A4755K Multiphase flows A4780A Flow visualization and imaging C7440 Civil and mechanical engineering computing C5260B Computer vision and image processing techniques E2130 Fluid mechanics and aerodynamics (mechanical engineering) E0410H Mechanical engineering applications of IT E1620 Measurement
中文摘要	A double-shadow-images technique was developed to measure the three-dimensional deformation of a bubble in a dilute bubbly flow to investigate forces on the bubble and its lateral motion. Two elliptical projections of the deformed bubble were obtained using image processing techniques. Then, a pre-processing procedure was used to adjust the parameters of the projected ellipses of the bubble according to the epipolar geometry constraint. Finally, an algorithm was then used to reconstruct the three-dimensional bubble shape from the two ellipsoidal projection contours based on the dual-space theory. An error analysis shows that the measurement error is usually less than 12%, so the technique can be used to measure bubble deformation in dilute bubbly flows.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25850]
专题	清华大学
推荐引用方式 GB/T 7714	Zhu Xuecheng,Luo Rui,Yang Xianyong. Three-dimensional bubble deformation measured by double shadow images in dilute bubbly flow[J],2010, 2010.
APA	Zhu Xuecheng,Luo Rui,&Yang Xianyong.(2010).Three-dimensional bubble deformation measured by double shadow images in dilute bubbly flow..
MLA	Zhu Xuecheng,et al."Three-dimensional bubble deformation measured by double shadow images in dilute bubbly flow".(2010).

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