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	Sedimentation measurements of small particle suspensions by a microfocus X-ray tomography system
	Zhao Xuelian ; Li Zheng ; Huang Zhifeng ; Luo Rui
	2010-05-11 ; 2010-05-11
关键词	Experimental/ flow visualisation microfluidics micromechanics oils sedimentation suspensions tomography two-phase flow X-ray imaging/ sedimentation measurements small particle suspensions microfocus X-ray tomography system mineral oil suspensions two-phase flow fields mean particle volume fractions image processing program volume fraction distribution sedimentation process settling velocity vessel micromultiphase flow fields/ A4780A Flow visualization and imaging A4755K Multiphase flows A8270K Emulsions and suspensions E2130 Fluid mechanics and aerodynamics (mechanical engineering) E2160 Micromechanics (mechanical engineering) E1620 Measurement
中文摘要	The sedimentation of micro-TiO/sub 2/ particles in mineral oil suspensions was studied using a microfocus X-ray tomography system. The tomography system produced images of the two-phase flow fields with different mean particle volume fractions. The images were then analyzed by an image processing program to obtain the volume fraction distribution of particles in the suspensions and its evolution during the sedimentation process. The results showed that the locally averaged settling velocity of the particles dramatically decreased as the particle volume fraction increased and that the relation between the two parameters was strongly non-linear. As a result, the particle volume fraction distribution along the vertical direction of the vessel had a wave-like shape. The experiments also showed the effectiveness of the microfocus X-ray-tomography system for measuring micro-multiphase flow fields.
语种	英语 ; 英语
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25933]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao Xuelian,Li Zheng,Huang Zhifeng,et al. Sedimentation measurements of small particle suspensions by a microfocus X-ray tomography system[J],2010, 2010.
APA	Zhao Xuelian,Li Zheng,Huang Zhifeng,&Luo Rui.(2010).Sedimentation measurements of small particle suspensions by a microfocus X-ray tomography system..
MLA	Zhao Xuelian,et al."Sedimentation measurements of small particle suspensions by a microfocus X-ray tomography system".(2010).

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