Chengzhi Hu
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纳米流体圆管内的湍流流动特性
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Indexed by:期刊论文

Date of Publication:2014-03-03

Journal:化工学报

Included Journals:EI、PKU、ISTIC、Scopus

Volume:65

Issue:z1

Page Number:17-26

ISSN No.:0438-1157

Key Words:纳米流体;压差;两相流;湍流;计算流体力学

Abstract:采用Eulerian-Eulerian模型和Eulerian Lagrange模型研究了TiO2-水纳米流体在水平管内的湍流流动特性,并与实验结果进行对比分析,探讨了不同模型中各种相间作用力的影响.从微流动角度探索纳米流体的流动本质,从而进一步揭示其传热强化机理.结果表明:在壁面附近,纳米颗粒与水存在着明显的速度差异,相间的动量交换十分明显,从而强化了局部微流动,导致边界层变薄.纳米颗粒在整个流场内部是不均匀分布的,使得边界层内部换热能力得到大幅度增强.纳米流体流动特性的改变是影响其强化换热的主要因素.

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Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:能源与动力学院

Discipline:Energy and Environmental Engineering

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