Numerical investigation of slush nitrogen flow in a horizontal pipe

Numerical investigation of slush nitrogen flow in a horizontal pipe
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水平管内泥浆氮流动的数值研究

DOI:
10.1016/j.ces.2012.01.027
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发表时间:
2012-05
影响因子:
4.7
通讯作者:
Zhang, P.
Zhang, P.
中科院分区:
工程技术2区
文献类型:
--
作者:
Jiang, Y.Y.;Zhang, P.

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氮泥是液氮中含有固体颗粒的低温两相流体,采用二维欧拉-欧拉多相流方法研究了氮泥在水平管内的流动。采用单相k-ε湍流模型模拟两相湍流流动,采用颗粒流动力学理论模拟固相的运动,以考虑颗粒与颗粒之间以及颗粒与壁面之间的相互作用。首先利用公开文献中几种不同浆体流动的固相体积分数和速度分布数据对二维多相流模型进行了验证,然后将其进一步应用于水平管中氮浆流动的研究,并将数值计算的固相速度分布与实验数据进行了比较。通过数值模拟研究了不同流速和平均固相体积分数对氮浆流动特性的影响。
Slush nitrogen is a cryogenic two-phase fluid containing solid particles in liquid nitrogen, and the flow of slush nitrogen in a horizontal pipe is investigated using the 2D Eulerian–Eulerian multiphase approach. The per-phase k–ε turbulence model is used in the study to model the turbulent two-phase flow, and the motion of solid phase is modeled by the kinetic theory of granular flow to account for both particle–particle and particle–wall interactions. The 2D multiphase model is firstly validated with solid volume fraction and velocity profile data of several different slurry flows from the open literature, and then is further applied to studying slush nitrogen flow in a horizontal pipe, and the numerical solid velocity profiles are compared with the experimental data. The effects of the flow velocity and the mean solid volume fraction on the flow characteristics of slush nitrogen are investigated numerically in this study.
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发表时间: 2007-11-01
影响因子: 4.7
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