Transient thermal boundary layers over rough surfaces

J.B.R. Loureiro; A.P. Silva Freire

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Transient thermal boundary layers over rough surfaces

机译：粗糙表面上的瞬态热边界层

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摘要

The transient heat transfer convection in a turbulent boundary layer is theoretically and experimentally studied when a time-periodical step-wise heat flux is imposed upon a rough surface. In particular, the behavior of the displacement height for the thermal boundary layer and the validity of the Reynolds analogy are analyzed. The local boundary layer characteristics, friction velocity, friction temperature and the displacement heights for the velocity and the temperature profiles, are evaluated through the graphical method of Perry and Joubert (1963) [3]. The results indicate that the displacement heights assume very different values and that the Reynolds analogy hypothesis is satisfied.

机译：当在粗糙表面上施加时间周期的逐步热通量时，对湍流边界层中的瞬态传热对流进行了理论和实验研究。特别地，分析了热边界层的位移高度的行为和雷诺类比的有效性。局部边界层的特性，摩擦速度，摩擦温度以及速度和温度曲线的位移高度通过Perry和Joubert（1963）的图形方法进行评估[3]。结果表明，位移高度具有非常不同的值，并且满足了雷诺兹类比假设。

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来源
《International Journal of Heat and Mass Transfer》 |2014年第4期|217-227|共11页
作者
J.B.R. Loureiro; A.P. Silva Freire;
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作者单位

Mechanical Engineering Program (PEM/COPPE/UFRJ), C.P. 68503, 21941-972 Rio de Janeiro, Brazil ,Mechanical Engineering Department (DEM/Poli/UFRJ), C.P. 68503, 21941-972 Rio de Janeiro, Brazil;

Mechanical Engineering Program (PEM/COPPE/UFRJ), C.P. 68503, 21941-972 Rio de Janeiro, Brazil;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Thermal boundary layer; Transient; Roughness; Error in origin; Reynolds analogy;

机译：热边界层;短暂的;粗糙度原产地错误;雷诺类比;

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1. Surface and inlet boundary conditions for the simulation of turbulent boundary layer over complex rough surfaces [J] . Maruyama Takashi Journal of Wind Engineering and Industrial Aerodynamics: The Journal of the International Association for Wind Engineering . 1999,第0期

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2. Transient analysis of sliding contact of layered elastic/plastic solids with rough surfaces [J] . W. Peng, B. Bhushan Microsystem technologies . 2003,第5期

机译：层状弹性/塑料固体与粗糙表面滑动接触的瞬态分析
3. AIRCRAFT OBSERVATIONS OF THE DEVELOPMENT OF THERMAL INTERNAL BOUNDARY LAYERS AND SCALING OF THE CONVECTIVE BOUNDARY LAYER OVER NON-HOMOGENEOUS LAND SURFACES [J] . MICHAIL A. STRUNIN, TETSUYA HIYAMA, JUN ASANUMA, Boundary-layer Meteorology . 2004,第3期

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4. Convection Velocities in Turbulent Boundary Layers over Rough Surfaces [C] . Klára Jur?áková, Radka Kellnerová ITi Conference in Turbulence . 2019

机译：粗糙表面湍流边界层中的对流速度
5. Open channel turbulent boundary layers and wall jets on rough surfaces. [D] . Tachie, Mark Francis. 2001

机译：粗糙表面上的明渠湍流边界层和壁射流。
6. Boundary layer flow past a stretching/shrinking surface beneath an external uniform shear flow with a convective surface boundary condition in a nanofluid [O] . Nor Azizah Yacob, Anuar Ishak, Ioan Pop, 2011

机译：在纳米流体中具有均匀对流表面边界条件的边界层流经过外部均匀剪切流下方的拉伸/收缩表面
7. Studies on Boundary Layer Parameters on Rough Surfaces in Turbulent Boundary Layer Zone [O] . Singh Arunima 2015

机译：湍流边界层带粗糙面边界层参数研究
8. Fundamental Studies of the Structure of Hypersonic Attached and Separated Boundary Layers Over Smooth, Rough and Transpiration-Cooled Surfaces. [R] . Holden, M. S. 1991

机译：平滑，粗糙和蒸腾冷却表面高超声速附着和分离边界层结构的基础研究。

Transient thermal boundary layers over rough surfaces

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