Effect of Microfins on Thermal Performance of Microchannel Using CFD

2018 ◽  
Vol 7 (3.14) ◽  
pp. 1
Author(s):  
Wei Long Yeo ◽  
Kim Ho Yeap ◽  
Koon Chun Lai ◽  
Pei Song Chee ◽  
Kok Seng Ong
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Heat Sink ◽  
Heat Transfer Characteristic ◽  
Thermal Boundary Layer ◽  
Reynold Number ◽  
Transfer Characteristic ◽  
Microchannel Heat Sink ◽  
Flow And Heat Transfer ◽  
Different Types

In the present study, the fluid flow and heat transfer characteristic of microchannel heat sink with microfins are studied numerically at Reynold number ranging from 400 to 1200. The influence of microfins on the Nusselt number and pressure drop are investigated. Five different types of microfins namely cylindrical microfins (Case A), diverge cylindrical microfins (Case B), diverge cylindrical microfins with semi-circle rib (Case C), diverge cylindrical microfins with rectangular rib (Case D) and diverge cylindrical microfins with triangular rib (Case E) are designed. A comparative analysis of these five types of microfins with bare microchannel has been conducted. The result highlighted the extended microfins augmented the heat transfer characteristic by disrupt the thermal boundary layer. The overall thermal performances of microchannel heat sink with microfins are 1.1 – 1.47 times higher compared to bare microchannel.  

scholarly journals Study on flow and heat transfer of liquid metal in a new top-slotted microchannel heat sink

2021 ◽  
Vol 621 ◽  
pp. 012054
Author(s):  
Zhiwei Chen ◽  
Peng Qian ◽  
Zizhen Huang ◽  
Chengyuan Luo ◽  
Minghou Liu
Keyword(s):  
Heat Transfer ◽  
Liquid Metal ◽  
Heat Sink ◽  
Microchannel Heat Sink ◽  
Flow And Heat Transfer

Computational study on fluid flow and heat transfer characteristic of hollow structured packed bed

2019 ◽  
Vol 344 ◽  
pp. 463-474 ◽  
Author(s):  
Zehua Guo ◽  
Zhongning Sun ◽  
Nan Zhang ◽  
Ming Ding ◽  
Haozhi Bian ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Heat Transfer Characteristic ◽  
Computational Study ◽  
Packed Bed ◽  
Transfer Characteristic ◽  
Flow And Heat Transfer

A numerical investigation on LNG flow and heat transfer characteristic in heat exchanger

2014 ◽  
Vol 68 ◽  
pp. 110-118 ◽  
Author(s):  
Handry Afrianto ◽  
Md. Riyad Tanshen ◽  
B. Munkhbayar ◽  
U. Tony Suryo ◽  
Hanshik Chung ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Numerical Investigation ◽  
Heat Transfer Characteristic ◽  
Transfer Characteristic ◽  
Flow And Heat Transfer

Optimization of Flow and Heat Transfer for a New Double-Layered Microchannel Heat Sink

2019 ◽  
Author(s):  
Huanling Liu ◽  
Bin Zhang
Keyword(s):  
Heat Transfer ◽  
Heat Sink ◽  
Heat Transfer Performance ◽  
Microchannel Heat Sink ◽  
Transfer Performance ◽  
Temperature Uniformity ◽  
Flow And Heat Transfer ◽  
Fluent Simulation ◽  
New Type ◽  
Improved Design

Abstract In this paper, we propose a new type of DL-MCHS to improve the substrate temperature uniformity of the microchannel heat sink, and conduct the optimization of the New DL-MCHS. The heat transfer and friction characteristics of the novel DL-MCHS are studied by numerical simulation. We compare the heat transfer performance the new DL-MCHS with the traditional TDL-MCHS (the DL-MCHS with truncated top channels λ = 0.38). The results prove the effectiveness of the improved design by FLUENT simulation. When the inlet velocity is kept constant and coolant is water, the heat transfer performance of the New DL-MCHS is higher than that of TDL-MCHS leading to an increase of the temperature uniformity. In order to achieving the best overall heat transfer performance, an optimization of New DL-MCHS is performed by GA (genetic algorithm).

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