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[1]林纬,喻九阳*,吴艳阳,等.横纹管脉冲流流动与换热数值分析[J].武汉工程大学学报,2011,(05):89-93.[doi:10.3969/j.issn.16742869.2011.05.023]
　LIN Wei,YU Jiuyang,WU Yanyang,et al.Numerical analysis of heat transfer and flow field ofpulsating flow in transverse tube[J].Journal of Wuhan Institute of Technology,2011,(05):89-93.[doi:10.3969/j.issn.16742869.2011.05.023]
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横纹管脉冲流流动与换热数值分析(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年05期
页码:
89-93
栏目:
机电与信息工程
出版日期:
2011-05-31

文章信息/Info

Title:
Numerical analysis of heat transfer and flow field of
pulsating flow in transverse tube
文章编号:
16742869(2011)05008905
作者:
林纬; 喻九阳*; 吴艳阳; 刘倩
武汉工程大学机电工程学院，湖北 武汉 430074
Author(s):
LIN Wei;  YU Jiuyang;  WU Yanyang;  LIU Qian
School of Mechanical Eletrical Engineering, Wuhan Institute of Technology,Wuhan 430074, China
关键词:
横纹管;  脉冲流;  换热;  流动
Keywords:
transverse tube;  pulsating flow;  heat transfer;  flow field
分类号:
TK172.4
DOI:
10.3969/j.issn.16742869.2011.05.023
文献标志码:
A
摘要:
通过数值模拟计算，研究低振动雷诺数下横纹管内脉冲流流动和换热.数值计算结果表明：脉冲流动引起出口压力正（余）弦波动，波动幅度随脉冲流振幅、频率的增大而增大；脉冲流动能够使流体在低速和低振动雷诺数下产生漩涡，并周期性生成、迁移和脱落；由于漩涡的作用，增强了流体的径向扰动和相对扰动，增大了横纹管内壁切应力，引起壁面切应力的周期性变化，减薄边界层，增强流体质量、能量输运；随着脉冲流振幅的增加，强化传热系数最高可以达到1.97.
Abstract:
In this paper, the flow and heat transfer of pulsating flow under low vibrational Reynolds number in a transverse tube were studied through numerical simulation method. The results showed that: the sine (or cosine) fluctuation of outlet pressure was produced by pulsating flow, furthermore, the fluctuate scope increased with increasing amplitude and frequency of pulsating flow; under low velocity and low vibrational Reynolds number, the vortices were induced to generate，migrate and shed periodically by pulsating flow; due to the growing of vortices, radial and mutual disturbance of flow were aggravated and flow boundary layer was thinner, therefore, the mass and energy transfer were enhanced; with the increasing amplitude of pulsating flow, the maximum enhanced heat transfer coefficient can reach 1.97.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：20101228基金项目：国家自然科学基金（No.50976080）作者简介：林纬(1987)，男，湖北公安人，硕士研究生.研究方向：强化传热技术.指导老师：喻九阳，教授，硕士研究生导师.研究方向：高效节能技术.
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