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	Study on Local Resistance of non-Newtonian Power Law Fluid in Elbow Pipes
	Zhang, H., Xu, T. T., Zhang, X. X., Wang, Y. X., Wang, Y. C. and Liu, X. T.1
	2016
关键词	non-Newtonian fluid Local resistance coefficient Reynolds number Bend diameter ratio Roughness loss coefficients turbulent-flow fittings valves
中文摘要	Floating zone technique is a crucible-free process for growth of high quality single crystals. Unstable thermocapillary convection is a typical phenomenon during the process under microgravity. Therefore, it is very important to investigate the instability of thermocapillary convection in liquid bridges with deformable free-surface under microgravity. In this works, the Volume of Fluid (VOF) method is employed to track the free-surface movement. The results are presented as the behavior of flow structure and temperature distribution of the molten zone. The impact of Marangoni number (Ma) is also investigated on free-surface deformation as well as the instability of thermocapillary convection. The free-surface exhibits a noticeable axisymmetric (but it is non-centrosymmetric) and elliptical shape along the circumferential direction. This specific surface shape presents a typical narrow 'neck-shaped' structure with convex at two ends of the zone and concave at the mid-plane along the axial direction. At both theta = 0 degrees and theta = 90 degrees, the deformation ratio increases rapidly with Ma at first, and then increases slowly. Moreover, the hydrothermal wave number m and the instability of thermocapillary convection increase with Ma.
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/113083]
专题	工程热物理研究所_Journal of Thermal Science_期刊论文
作者单位	1.[Zhang Haixia 2.Zhang Yukui 3.Zhu Zhiping 4.Lu Qinggang] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China. [Zhang Yukui] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, H., Xu, T. T., Zhang, X. X., Wang, Y. X., Wang, Y. C. and Liu, X. T.. Study on Local Resistance of non-Newtonian Power Law Fluid in Elbow Pipes[J],2016.
APA	Zhang, H., Xu, T. T., Zhang, X. X., Wang, Y. X., Wang, Y. C. and Liu, X. T..(2016).Study on Local Resistance of non-Newtonian Power Law Fluid in Elbow Pipes..
MLA	Zhang, H., Xu, T. T., Zhang, X. X., Wang, Y. X., Wang, Y. C. and Liu, X. T.."Study on Local Resistance of non-Newtonian Power Law Fluid in Elbow Pipes".(2016).

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