PRESSURE DROP AND HEAT TRANSFER OF FULLY DEVELOPED, LAMINAR FLOW IN ROUGH, RECTANGULAR MICROCHANNELS

机译：矩形微通道中完全发展的层流的压降和热传递

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In this paper, a Gaussian, isotropic distribution has been applied to model the wall roughness in microchannels of rectangular cross-section in order to investigate the friction factor and convection coefficient of fully developed, laminar and incompressible flows. As the hydraulic diameter of (micro-) channels decreases, the surface to volume ratio increases rapidly. As a result, the surface phenomena and the effect of roughness become more significant. There is a need for a better understanding of the effect of wall roughness on fluid flow characteristics in microchannels which make them well suited for a wide variety of unique cooling applications. The results of this research indicate that the friction factor and convection heat transfer coefficient increase by increasing the relative roughness of channel. The effect of changing the aspect ratio has also been investigated in this research. In addition, results are compared with experimental data obtained by different researchers.

机译：为了研究充分展开的层流和不可压缩流的摩擦系数和对流系数，本文采用高斯各向同性分布对矩形截面的微通道中的壁面粗糙度进行建模。随着（微）通道的水力直径减小，表面体积比迅速增加。结果，表面现象和粗糙度的影响变得更加明显。需要更好地理解壁粗糙度对微通道中流体流动特性的影响，这使其非常适合于各种独特的冷却应用。研究结果表明，摩擦系数和对流换热系数通过增加通道的相对粗糙度而增加。在这项研究中还研究了改变纵横比的效果。另外，将结果与不同研究人员获得的实验数据进行比较。

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《6th international conference on nanochannels, microchannels and minichannels 2008》|2008年|153-157|共5页
会议地点 Darmstadt(DE);Darmstadt(DE)
作者
Hossein Shokouhmand; Maziar Aghvami; Mohammad Javad Afshin;
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作者单位

School of Mechanical Engineering, University of Tehran;

School of Mechanical Engineering, University of Tehran;

School of Mechanical Engineering, University of Tehran;

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原文格式 PDF
正文语种 eng
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关键词
A_c: cross-sectional area, m~2; a: mean height of rough microchannel, m; b: mean width of rough microchannel, m; D_h : microchannel hydraulic diameter, 4ab/(a+b), m; f: fanning friction factor; et al;

机译：A_c：截面积，m〜2； a：粗糙微通道的平均高度，m； b：粗糙微通道的平均宽度，m； D_h：微通道水力直径，4ab /（a + b），m； f：扇形摩擦系数；等;

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专利

1. Numerical Investigation of Heat Transfer in Rectangular MicroChannel Under H2 Boundary Condition During Developing and Fully Developed Laminar Flow [J] . V. V. Dharaiya, S. G. Kandlikar Journal of Heat Transfer . 2012,第2期

机译：H2边界条件下矩形微通道传热和完全展开层流传热的数值研究
2. An experimental study on fully developed laminar flow and heat transfer in rectangular microchannels [J] . Kim Byongjoo International Journal of Heat and Fluid Flow . 2016,第Deca期

机译：矩形微通道中充分发展的层流和传热的实验研究
3. Relationship between pressure drop and heat transfer of developing and fully developed flow in smooth horizontal circular tubes in the laminar, transitional, quasi-turbulent and turbulent flow regimes [J] . M. Everts, J.P. Meyer International Journal of Heat and Mass Transfer . 2018,第feba期

机译：层流，过渡，准湍流和湍流状态下光滑水平圆管中发育和完全展开流动的压降与传热之间的关系
4. PRESSURE DROP AND HEAT TRANSFER OF FULLY DEVELOPED, LAMINAR FLOW IN ROUGH, RECTANGULAR MICROCHANNELS [C] . International conference on nanochannels, microchannels and minichannels . 2008

机译：完全发育的压降和传热，粗糙，矩形微通道中的层流动流动
5. Heat Transfer and Pressure Drop in Microchannels with Different Inlet Geometries for Laminar and Transitional Flow of Water [D] . Garach, D.V. 2014

机译：不同入口几何形状的微通道中层流和过渡水的传热和压降
6. The Effect of Streaming Potential and Viscous Dissipation in the Heat Transfer Characteristics of Power-Law Nanofluid Flow in a Rectangular Microchannel [O] . Shuyan Deng, Quan An, Mingying Li 2020

机译：矩形微通道中流势和粘性耗散对幂律纳米流体流传热特性的影响
7. Relationship between pressure drop and heat transfer of developing and fully developed flow in smooth horizontal circular tubes in the laminar, transitional, quasi-turbulent and turbulent flow regimes [O] . M. Everts, J.P. Meyer 2018

机译：流水，过渡，准湍流和湍流流动制造下光滑水平圆管中发育和完全发育流动的压降与传热的关系

PRESSURE DROP AND HEAT TRANSFER OF FULLY DEVELOPED, LAMINAR FLOW IN ROUGH, RECTANGULAR MICROCHANNELS

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