Experiment on influence factors on flow field characteristics of intercalated spiral liquid-solid two-phase flow in tube

被引：0
|
作者：
Peng D. [1 ]
Fu W. [1 ]
Feng Y. [1 ]
Yu T. [2 ]
Tan Z. [1 ]
Wu S. [1 ]
Wang Z. [1 ]
机构：
[1] School of Mechanical Engineering, Xiangtan University, Xiangtan
[2] School of Mechanical Engineering, Hunan University of Technology, Zhuzhou
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2022年 / 46卷 / 06期
关键词：
intercalated spiral; liquid-solid two-phase flow; particle image processing; turbulent kinetic energy; vorticity field;
D O I：
10.3969/j.issn.1673-5005.2022.06.021
中图分类号：
学科分类号：
摘要：
In order to explore the effects of the Reynolds number, the particle volume concentration and the particle size on the flow field characteristics of the intercalated spiral liquid-solid two-phase flow composite technology, the particle image processing technology was used to study the vorticity, the radial velocity and the turbulent kinetic energy distribution of the fluid in the tube. The results show that the average vorticity of the whole system, the average vorticity of the near-wall region and the radial peak velocity are positively correlated with the Reynolds number and particle volume fraction, but negatively correlated with the particle size. The radial velocity fluctuates positively and negatively, and the average vorticity in the near-wall region increases more significantly than the overall average vorticity. In the experimental range, the average turbulent kinetic energy of Re = 33 000 is increased by 81. 7% compared with that when Re = 26 400, the average turbulent kinetic energy of the particle volume concentration being 5% is increased by 16. 7% compared with that being 1%, and the average turbulent kinetic energy of the particle size being 1. 5 mm is increased by 9. 83% compared with that being 5 mm. © 2022 University of Petroleum, China. All rights reserved.
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页码：177 / 183
页数：6
相关论文
共 20 条
  • [1] IU S, SAKR M., A comprehensive review on passive heat transfer enhancements in pipeexchangers[J], Renewable and Sustainable Energy Reviews, 19, pp. 64-81, (2013)
  • [2] GADDAMWAR SS, SAMBHE R U., Heat transfer characteristics of inclined helical coil tube by forced and free convection [J], Journal of Advanced Marine Engineering and Technology, 31, pp. 707-714, (2020)
  • [3] YAN Wanbo, CHEN Zhong, XU Wendong, Et al., Analysis on technique of heat transfer enhancement of LNG in tubes, Journal of China University of Petroleum(Edition of Natural Science), 43, 2, pp. 148-155, (2019)
  • [4] YANG M, JIANG F, QI G P, Et al., Heat transfer performance of a vapor-liquid-solid three-phase circulating fluidized bed evaporation system with different concentrations of Na<sub>2</sub>SO<sub>4</sub> solutions[J], Applied Thermal Engineering, 180, (2020)
  • [5] WU Tenghu, Fully resolved direct numerical simulations of interactions between big particles and turbulence in particle-laden pipe and channel flows, (2011)
  • [6] ZHANG C, WANG D, ZHU Y, Et al., Numerical study on heat transfer and flow characteristics of a tube fitted with double spiral spring [J], International Journal of Thermal Sciences, 94, pp. 18-27, (2015)
  • [7] CHEN Y, GAN L, ZHANG J H, Et al., Thermohydraulic analysis of hybrid smooth and spirally corrugated tubes [J], International Journal of Thermal Sciences, 158, (2020)
  • [8] MU O D, SANMIGUEL-ROJAS E, Numerical simulations of the laminar flow in pipes with wire coil inserts [J], Computers & Fluids, 44, 1, pp. 169-177, (2011)
  • [9] EIAMSA-ARD S, PROMTHAISONG P., Counter-rotation vortex flows andheat transfer mechanisms in a V-spirally-corrugated tube, Proceedings of the Institution of Mechanical Engineers, part A: Journal of Power and Energy, pp. 1-25, (2019)
  • [10] LU S, JIANG F, Qi G P, Et al., Pressure drop of liquid-solid two-phase flow in a down-flow circulating fluidized-bed[J], Powder Technology, 375, pp. 136-145, (2020)
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