Geometric optimization for thermal-hydraulic performance of dimpled enhanced tubes for single phase flow

被引：78
作者：
Li, Ming [1 ]
Khan, Tariq S. [1 ]
Al Hajri, Ebrahim [1 ]
Ayub, Zahid H. [2 ]
机构：
[1] Petr Inst, Dept Mech Engn, Abu Dhabi, U Arab Emirates
[2] Isotherm Inc, Arlington, TX USA
来源：
APPLIED THERMAL ENGINEERING | 2016年 / 103卷
关键词：
Heat transfer enhancement; Heat exchangers; Optimization; Simulation; HEAT-TRANSFER ENHANCEMENT; PRESSURE-DROP; CHANNELS;
D O I：
10.1016/j.applthermaleng.2016.04.141
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Enhanced surfaces have larger heat transfer surface area and offer increased turbulence level hence allowing higher heat exchange performance. In this study, numerical simulations are conducted to simulate geometric design optimization of enhanced tubes for optimal thermal-hydraulic performance: The simulations are validated with experimental data. Two and three dimensional. steady incompressible turbulent flow in dimpled enhanced tube is numerically studied using realizable k-epsilon method. The pressure-velocity coupling is solved by Semi-Implicit Method for Pressure Linked Equations Consistent (SIMPLEC) algorithm. Results show that dimples on tube surface present high heat transfer performance. Compared to staggered configuration, the in-line dimples arrangement provided better overall heat exchange characteristics. The geometric parameters like dimple shape, depth, pitch and starts are found to have significant effects on overall heat exchange performance while the dimple diameter has insignificant effect on thermal performance. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：639 / 650
页数：12
相关论文
共 23 条
[1]   Numerical investigation of heat transfer and pressure drop in enhanced tubes [J].
Agra, Ozden ;
Demir, Hakan ;
Atayilmaz, S. Ozgur ;
Kantas, Fatih ;
Dalkilic, Ahmet Selim .
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2011, 38 (10) :1384-1391
[2]  
Ansys A.F., 2011, 14 0 THEOR GUID
[3]  
Bergles A.E., 1983, BIBLIOGRAPHY ON AUGM
[4]  
Bergles A.E., 1965, Survey and evaluation of techniques to augment convective heat transfer
[5]  
Bergles AE, 2013, J ENHANC HEAT TRANSF, V20, P1
[6]   Heat transfer enhancement in mini-channel heat sinks with dimples and cylindrical grooves [J].
Bi, C. ;
Tang, G. H. ;
Tao, W. Q. .
APPLIED THERMAL ENGINEERING, 2013, 55 (1-2) :121-132
[7]   Heat transfer enhancement in dimpled tubes [J].
Chen, J ;
Müller-Steinhagen, H ;
Duffy, GG .
APPLIED THERMAL ENGINEERING, 2001, 21 (05) :535-547
[8]   3-D numerical study on the effect of geometrical parameters on thermal behavior of dimple jacket in thin-film evaporator [J].
Fan, Qi ;
Yin, Xia .
APPLIED THERMAL ENGINEERING, 2008, 28 (14-15) :1875-1881
[9]   Experimental study of heat transfer enhancement with wire coil inserts in laminar-transition-turbulent regimes at different Prandtl numbers [J].
García, A ;
Vicente, PG ;
Viedma, A .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (21-22) :4640-4651
[10]   The influence of artificial roughness shape on heat transfer enhancement: Corrugated tubes, dimpled tubes and wire coils [J].
Garcia, A. ;
Solano, J. P. ;
Vicente, P. G. ;
Viedma, A. .
APPLIED THERMAL ENGINEERING, 2012, 35 :196-201
123