Study on Local Resistance of non-Newtonian Power Law Fluid in Elbow Pipes
文献类型：期刊论文
| 作者 | Zhang, H., Xu, T. T., Zhang, X. X., Wang, Y. X., Wang, Y. C. and Liu, X. T.1 |
| 出版日期 | 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. |
| 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). |
入库方式： OAI收割
来源：工程热物理研究所
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