...Zhongchen Zhang; Michael Collins; Eric Lau; Chris Botting; Majid Bahrami Effect of anodization on the thermal performance of naturally cooled heat sinks in power electronic devices made of die-cast aluminum alloy A380 and machined aluminum alloy 6061 was investigated experimentally and numerically...

... coefficients in heterogeneous and hierarchical heat transfer devices was outlined and implemented for the simple case of cross flow over staggered cylinders, which is commonly implemented in heat sinking and compact heat exchanger devices. Measurements obtained using this method allow for thermal-fluid...

... are presented for all the cases. The predicted correlations for Nusselt numbers can be very useful resource for the design and optimization of microchannel heat sinks and other microfluidic devices. Temperature variation along the width of a rectangular microchannel for 0.5 aspect ratio The average...

... definition is based. However, at a given flow rate, the critical heat input (total heat transfer rate to the coolant when CHF occurs) depends only on the coolant and has minimal dependence on the details of the microchannel heat sink (channel size, number of channels, substrate material, and base area...

...Avijit Bhunia; C. L. Chen Heat transfer due to steady, laminar air flow through a curved rectangular channel with a variable cross-sectional (c/s) area is investigated computationally. Such a flow passage is formed between two fin walls of a curved fin heat sink with a 90 deg bend, used in avionics...

...Yogendra Joshi; Mohamed-Nabil Sabry 07 03 2011 07 03 2011 convection cooling foams heat sinks microfabrication micromechanical devices two-phase flow This special issue of the Journal of Heat Transfer contains six papers selected out of the 53 presented at the Second...

... conductivity but low permeability are investigated for convection heat transfer enhancement using air as coolant. Two novel heat sink structures are designed to reduce the fluid pressure drop. Both experimental and numerical approaches are adopted in the study. The experimental data show that the designed...

...W. Escher; T. Brunschwiler; N. Shalkevich; A. Shalkevich; T. Burgi; B. Michel; D. Poulikakos Nanofluids have been proposed to improve the performance of microchannel heat sinks. In this paper, we present a systematic characterization of aqueous silica nanoparticle suspensions with concentrations up...

...W. Wu; J. H. Du; Y. R. Lin; L. C. Chow; H. Bostanci; B. A. Saarloos; D. P. Rini This study investigates a V-shaped corrugated carbon foam heat sink for thermal management of electronics with forced air convection. Experiments were conducted to determine the heat sink performance in terms of heat...

...J. Stafford; E. Walsh; V. Egan; P. Walsh; Y. S. Muzychka 22 09 2010 22 09 2010 heat sinks heat transfer The error within this paper is in Eq. (1). The exponent on the square bracket term is given as 1/3 when it should be 1/m. The correct form of Eq. (1) is shown below...

...Jie Li; Clement Kleinstreuer Employing a validated computer simulation model, entropy generation is analyzed in trapezoidal microchannels for steady laminar flow of pure water and CuO-water nanofluids. Focusing on microchannel heat sink applications, local and volumetric entropy rates caused...

...S. S. Feng; T. Kim; T. J. Lu This paper presents a cost effective semi-empirical analytical model for convective heat transfer in pin-fin heat sinks subjected to nonuniform heating set by a circular hot gas impinging jet. Based on empirical correlations taken from the open literature, temperature...

... systems. The proposed new models based on the wall to inlet temperature scale are more readily applicable to heat sink design, as only one fluid is present in these applications. The dimensionless heat transfer rate and dimensionless local wall temperature based on this temperature scale are more natural...

... into such devices. Conventional finned and corresponding finless designs of equal exterior dimensions are considered for three different heat sink profiles ranging from 1 mm to 4 mm in combination with a commercially available radial blower. The results show that forced convection heat transfer rates can...

...W. Escher; T. Brunschwiler; B. Michel; D. Poulikakos We report an experimental investigation of a novel, high performance ultrathin manifold microchannel heat sink. The heat sink consists of impinging liquid slot-jets on a structured surface fed with liquid coolant by an overlying two-dimensional...

...Hamid Reza Seyf; Mohammad Layeghi A numerical analysis of forced convective heat transfer from an elliptical pin fin heat sink with and without metal foam inserts is conducted using three-dimensional conjugate heat transfer model. The pin fin heat sink model consists of six elliptical pin rows...

...Chao Bai; Liqiu Wang We perform a constructal design of heat conduction in a blade-configured disk-shaped domain with uniform heat generation and periphery heat-sink by introducing a transition line from two-path conduction to one-path conduction in the domain. This orderly arranged blade...

...A. Megahed; I. Hassan An analytical model is proposed to predict the flow boiling heat transfer coefficient in the annular flow regime in mini- and microchannel heat sinks based on the separated model. The modeling procedure includes a formulation for determining the heat transfer coefficient based...

... microchannel heat sink were investigated numerically for laminar flow. For this purpose, the conjugate heat transfer problem involving simultaneous determination of temperature fields in both solid and liquid regions was solved numerically. The numerical model was validated with comparison to experimental data...

... Diego, CA, Nov. 5–7. Shives , G. , Norley , J. , Smale , M. , Chen , G. , and Capp , J. , 2004 , “ Comparative Thermal Performance Evaluation of Graphite/Epoxy Fin Heat Sinks ,” Proceedings of Intersociety Conference on Thermal Phenomena (ITHERM) , pp. 410 – 417...