Heat transfer enhancement in mini-channel heat sinks with dimples and cylindrical grooves

Abstract The convective cooling heat transfer in mini-channels with dimples, cylindrical grooves and low fins is numerically studied by using the field synergy principle. We solve the synergy angle distribution to examine the mechanisms of the heat transfer enhancement in the enhanced surfaces. The parameter PEC as the evaluation coefficient is employed to study the comprehensive performance of the enhanced surfaces. The results show that the dimple surface presents the highest performance of heat transfer enhancement. The geometry size effects of dimple are studied over a Reynolds number range of 2700–6100, and the most favorable dimple geometric structures are optimized by using the performance evaluation plot of enhanced heat transfer techniques.

[1]  J. M. Coulson,et al.  Heat Transfer , 2018, Finite Element Method for Solids and Structures.

[2]  H. Low,et al.  Numerical simulation of conjugate heat transfer in electronic cooling and analysis based on field synergy principle , 2008 .

[3]  V. Gnielinski.  New equations for heat and mass transfer in turbulent pipe and channel flow , 1976 .

[4]  Minking K. Chyu,et al.  Concavity Enhanced Heat Transfer in an Internal Cooling Passage , 1997 .

[5]  Jiangbo Wu,et al.  Investigation on laminar convection heat transfer in fin-and-tube heat exchanger in aligned arrangement with longitudinal vortex generator from the viewpoint of field synergy principle , 2007 .

[6]  Wen-Quan Tao,et al.  Experimental verification of the field synergy principle , 2007 .

[7]  B. Glezer,et al.  Channel Height Effect on Heat Transfer and Friction in a Dimpled Passage , 1999 .

[8]  Li-Zhi Zhang,et al.  Numerical Study of Periodically Fully Developed Flow and Heat Transfer in Cross-Corrugated Triangular Channels in Transitional Flow Regime , 2005 .

[9]  B. Glezer,et al.  Local Heat Transfer and Flow Structure on and Above a Dimpled Surface in a Channel , 2000 .

[10]  Mark E. Steinke,et al.  Single-Phase Heat Transfer Enhancement Techniques in Microchannel and Minichannel Flows , 2004 .

[11]  M. L. Hill,et al.  Flow structure due to dimple depressions on a channel surface , 2001 .

[12]  A. Bergles.  ExHFT for fourth generation heat transfer technology , 2002 .

[13]  J. P. V. Doormaal,et al.  ENHANCEMENTS OF THE SIMPLE METHOD FOR PREDICTING INCOMPRESSIBLE FLUID FLOWS , 1984 .

[14]  Bu-Xuan Wang,et al.  A novel concept for convective heat transfer enhancement , 1998 .

[15]  Wei Liu,et al.  Physical quantity synergy in laminar flow field of convective heat transfer and analysis of heat transfer enhancement , 2009 .

[16]  Min Zeng,et al.  Numerical Verification of the Field Synergy Principle for Turbulent Flow , 2004 .

[17]  Qun Chen,et al.  Field synergy equation for turbulent heat transfer and its application , 2007 .

[18]  Zeng-Yuan Guo,et al.  Field-Coordination Analysis and Numerical Study on Turbulent Convective Heat Transfer Enhancement , 2005 .

[19]  Arthur E. Bergles,et al.  Enhanced Heat Transfer: Endless Frontier, or Mature and Routine? , 1999 .

[20]  Kai-Shing Yang,et al.  Effect of cannelure fin configuration on compact aircooling heat sink , 2011 .

[21]  Phillip M. Ligrani,et al.  Effects Of Dimple Depth on Channel Nusselt Numbers and Friction Factors , 2005 .

[22]  Kwang-Yong Kim,et al.  Optimization of a staggered dimpled surface in a cooling channel using Kriging model , 2008 .

[23]  Wen-Quan Tao,et al.  The field synergy (coordination) principle and its applications in enhancing single phase convective heat transfer , 2005 .

[24]  Jian-Fei Zhang,et al.  A performance evaluation plot of enhanced heat transfer techniques oriented for energy-saving , 2009 .

[25]  G. Mahmood,et al.  Heat transfer in a dimpled channel: combined influences of aspect ratio, temperature ratio, Reynolds number, and flow structure , 2002 .

[26]  Wen-Quan Tao,et al.  Field synergy principle for enhancing convective heat transfer--its extension and numerical verifications , 2002 .

[27]  Liu Wei,et al.  Physical quantity synergy in laminar flow field and its application in heat transfer enhancement , 2009 .

[28]  B. Glezer,et al.  Channel Height Effect on Heat Transfer and Friction in a Dimpled Passage , 1999 .

[29]  M. Collins,et al.  Investigation of flow and heat transfer in corrugated passages—II. Numerical simulations , 1996 .

[30]  R. Webb,et al.  Forced convection heat transfer in helically rib-roughened tubes , 1980 .

[31]  Di Zhang,et al.  Flow and Heat Transfer in Microchannels With Dimples and Protrusions , 2012 .

[32]  Wei Zhang,et al.  Three-dimensional numerical study of heat transfer characteristics of plain plate fin-and-tube heat exchangers from view point of field synergy principle , 2005 .

[33]  Suyi Huang,et al.  Physical quantity synergy in the field of turbulent heat transfer and its analysis for heat transfer enhancement , 2010 .