High-performance heat sinking for VLSI

Tuckerman, David B.; Pease, R. F. W.

doi:10.1109/edl.1981.25367

Cited by 4,171 publications

(1,393 citation statements)

References 6 publications

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“…Making the tradeoff between accuracy and execution time, the grid system 5010145 is finally chosen for the simulation model. It is also found that the present predictions agree well with those of Tuckerman and Pease [21] and Ho et al [22]. Through these tests, the numerical scheme was found to be suitable for the present problem.…”

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confidence: 83%

Design of Porous-Microchannel Heat Sinks with Different Porous Configurations

Hung¹,

Huang²,

Yan³

2015

IJMMM

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Abstract-The models of the porous-microchannel heat sinks (porous-MCHSs) with different porous configurations are established in this work. Thermal performances of the porousMCHSs are investigated with the Reynolds number ranging from 45 to 1350. The results indicate that, compared with the results of non-porous MCHS, the thermal performances can be enhanced by using the porous configurations and increase with an increase in the Reynolds number, except for the case with a lower Reynolds number. Both the sandwich and the trapezoidal distribution designs have the best heat transfer efficacy, cooling performance and convective performance. In particular, the thermal performance for rectangular, outlet enlargement, thin rectangular, or block distribution design is not necessarily better than that without porous medium under lower pumping power. Finally, the sandwich distribution design is the best design of the porous-MCHSs by considering the thermal performance along with the pressure drop. Index Terms-Porous-microchannel, heat sink (porous-MCHS). I. INTRODUCTIONThe 3-D numerical model to investigate the effects of the porous configuration designs on the thermal performance of the porous-microchannel heat sinks (porous-MCHSs, as shown in Fig. 1) were proposed in this paper. The porousmicrochannel heat sinks make use of the insertion of a porous metallic medium into the microchannel to raise both the surface contact area-to-volume ratio with the coolant and the local velocity mixing of the coolant. Higher contact surface area-to-volume ratio and velocity mixing of the fluid provide a better convective heat transfer effect [1], [2]. It is known [3]-[10] that the heat transfer performance of porousMCHSs can be improved if the configurations of porosity are properly designed. The heat transfer improvement makes the porous-MCHSs possible of implementing a task of micro-scale electronics cooling [1], [2], [10].Many efforts have been devoted to improve the cooling performance of porous channels [1]- [10]. A sintered porous heat sink for the cooling of high-powered compact microprocessors was examined experimentally by Singh et al. [1]. The forced convection in porous rectangular ducts was performed by Calmidi and Mahajan [3] and Haji-Sheikh Manuscript received April 14, 2015; revised July 20, 2015. This work was supported in part by the National Science Council, R. O. C.Tu-Chieh Hung is with the Department of Mechanical Engineering, R.O.C Military Academy, Kaohsiung 83059, Taiwan (e-mail: christ.rich@msa.hinet.net).Yu-Xian Huang is with Delta Electronics, Tainan County 74144, Taiwan (e-mail: frank-303@yahoo.com.tw).Wei-Mon Yan is with the Department of Energy and Refrigerating AirConditioning Engineering, National Taipei Universi, Taiwan. et al. [4]. Zehforoosh and Hossainpour [5] investigated numerically the laminar forced convection in a partially porous channel using four dissimilar porous blocks attached to strip heat sources at the bottom wall. The fluid flow and heat transfer characteristics of a porous heat sink...

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confidence: 83%

Design of Porous-Microchannel Heat Sinks with Different Porous Configurations

Hung¹,

Huang²,

Yan³

2015

IJMMM

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“…This was already realized in 1981 by Tuckerman and Pease in their landmark paper on micro heat exchange. 70 They reported that heat dissipation up to 790 W/cm 2 was possible for a single-phase water-cooling system, which was used for cooling integrated circuits. Since then many different applications of micro heat exchangers have been realized, e.g.…”

Section: Heat Transport Phenomenamentioning

confidence: 99%

Beyond Organometallic Flow Chemistry: The Principles Behind the Use of Continuous-Flow Reactors for Synthesis

Noël

Hessel

2015

Topics in Organometallic Chemistry

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Flow chemistry is typically used to enable challenging reactions which are difficult to carry out in conventional batch equipment. Consequently, the use of continuous-flow reactors for applications in organometallic and organic chemistry has witnessed a spectacular increase in interest from the chemistry community in the last decade. However, flow chemistry is more than just pumping reagents through a capillary and the engineering behind the observed phenomena can help to exploit the technology's full potential. Here, we give an overview of the most important engineering aspects associated with flow chemistry. This includes a discussion of mass-, heat-, and photon-transport phenomena which are relevant to carry out chemical reactions in a microreactor. Next, determination of intrinsic kinetics, automation of chemical processes, solids handling and multistep reaction sequences in flow are discussed. Safety is one of the main drivers to implement continuous-flow microreactor technology in an existing process and a brief overview is given here as well. Finally, the scale-up potential of microreactor technology is reviewed.

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“…In the absence of sufficient heat removal, the working temperature of this component may exceed a desired temperature level which then increases the critical failure rate of equipment. Therefore, advanced electronic equipment with high heat generation requires an efficient and compact device to provide proper cooling operation [1]. In order to meet the cooling requirement, needs to increase the product of heat transfer coefficient (h) and heat transfer surface area (A) for a device.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Investigation of Heat Transfer Characteristics through a Rectangular Microchannel Heat Sink

Gawali¹,

Swami²,

Thakre³

2014

IJIRSET

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Investigation of heat transfer characteristics has been carried out by theoretically and experimentally for a straight microchannel heat sink of rectangular cross section of 507µm hydraulic diameter with water as the circulating fluid. The temperature distribution, pressure drop, heat transfer coefficient and total thermal resistance of the heat sink are selected as criteria for their cooling performance. Parameters that changes in this study are Reynolds number in ranges from 200 to 700. The theoretical results for heat transfer coefficient and thermal resistance are compared with the experimental results. The obtained theoretical results are having the good agreement with experimental results. It is found that the temperature of water in the microchannels increases with channel length. The present work proposes an approach to improve the heat transfer enhancement of microchannel heat sinks

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High-performance heat sinking for VLSI

Cited by 4,171 publications

References 6 publications

Design of Porous-Microchannel Heat Sinks with Different Porous Configurations

Design of Porous-Microchannel Heat Sinks with Different Porous Configurations

Beyond Organometallic Flow Chemistry: The Principles Behind the Use of Continuous-Flow Reactors for Synthesis

Theoretical and Experimental Investigation of Heat Transfer Characteristics through a Rectangular Microchannel Heat Sink

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