Heat Transfer Suppression in Flow Around a Rotating Circular Cylinder at High Prandtl Number

被引：7
|
作者：
Sufyan, M. [1 ]
Manzoor, S. [1 ]
Sheikh, N. A. [2 ]
机构：
[1] Univ Engn & Technol, Dept Mech Engn, Taxila, Pakistan
[2] Muhammad Ali Jinnah Univ, Dept Mech Engn, Islamabad, Pakistan
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2014年 / 39卷 / 11期
关键词：
Convection heat transfer; Rotating cylinder; Average/local Nusselt number; Prandtl number; Heat transfer suppression; BOUNDARY-LAYER-FLOW; CROSS-FLOW; FORCED-CONVECTION; LAMINAR-FLOW; REYNOLDS-NUMBERS; FLUID-FLOW; WAKE; DYNAMICS; LIQUIDS; SURFACE;
D O I：
10.1007/s13369-014-1337-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Forced convection heat transfer across a 2D circular cylinder rotating at constant speed is investigated. Numerical simulations are carried out at constant values of Reynolds number in the range of 80-160. The non-dimensional rotation rate, alpha, is examined up to a maximum value of 5.3 for Prandtl number (Pr) 7. At constant Reynolds number, heat transfer suppression kicks off even at lower rotation rates contrary to the systems with lower values of Pr. Moreover, the heat transfer suppression parameter in such cases saturates at almost the double value at intermediate rotation rates as compared to the systems with low Pr.
引用
收藏
页码：8051 / 8063
页数：13
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