Heat transfer performance evaluation based on local thermal non-equilibrium for air forced convection in channels filled with metal foam and spherical particles

2018 ◽  
Vol 145 ◽  
pp. 735-742 ◽  
Author(s):  
W. Zhang ◽  
X. Bai ◽  
M. Bao ◽  
A. Nakayama
Keyword(s):  
Heat Transfer ◽  
Performance Evaluation ◽  
Forced Convection ◽  
Heat Transfer Performance ◽  
Metal Foam ◽  
Spherical Particles ◽  
Transfer Performance ◽  
Non Equilibrium

3D Printed Architected Heat Sinks Cooling Performance in Free and Forced Convection Environments

2020 ◽  
Author(s):  
Mohamed I. Hassan Ali ◽  
Oraib Al-Ketan ◽  
Mohamad Khalil ◽  
Nada Baobaid ◽  
Kamran Khan ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Forced Convection ◽  
Heat Transfer Performance ◽  
Convection Heat Transfer ◽  
Heat Sinks ◽  
Cfd Modeling ◽  
Transfer Performance ◽  
Convection Heat ◽  
Performance Study

Abstract In this work, we extend our heat transfer performance study on our proposed new and novel 3D printable architected heat sinks with geometrically complex structures based on triply periodic minimal surfaces (TPMS). Computational fluid dynamics (CFD) modeling is used to assess the effect of porosity distribution, heat load, and isothermal boundary condition on the performance of the proposed TPMS-based heat sinks in active cooling using natural and forced convection heat transfer environments. The convection heat transfer coefficient, surface temperature, pressure drop are predicted using CFD method. The CFD model is validated using experimental results for the pressure drop and is verified by standard analytical results. Three TPMS structures are investigated in different orientations. Dimensionless heat transfer groups are developed to globalize the heat transfer performance of the proposed heat sinks.

Research Progress of Three Kinds of Enhanced Heat Transfer Structures

2013 ◽  
Vol 711 ◽  
pp. 219-222
Author(s):  
Zhan Shu He ◽  
Xiao Long Liu ◽  
Xue Fei Yang
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Transfer Performance ◽  
Metal Foam ◽  
Porous Metal ◽  
Research Direction ◽  
Research Progress ◽  
Future Research ◽  
Transfer Performance ◽  
Enhanced Heat Transfer

In order to transfer heat as much as possible through a unit area in unit time, this paper introduces three enhanced heat transfer structures, namely microchannel, open-celled metal foam and open-celled sintered porous metal. From two aspects of the heat transfer performance and the flow resistance, this paper reviews their research progress. Among three kinds of enhanced heat transfer structures, open-celled sintered porous metal has the best heat transfer performance, followed by open-celled metal foam and micro-channel. While, the sequence of the pressure drop of three kinds of enhanced heat transfer structures is in the reverse order. Thus, Enhanced heat transfer Structures with good heat transfer performance and small pressure drop are the future research direction.

scholarly journals Optimization of a micro-channel structure of an elliptical louver fin

2019 ◽  
Vol 23 (4) ◽  
pp. 2429-2436
Author(s):  
Fengye Yang ◽  
Guanghui Zhou ◽  
Pengfei Zhao ◽  
Enhai Liu ◽  
Haijun Li ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Performance Evaluation ◽  
Flow Resistance ◽  
Heat Transfer Performance ◽  
Channel Structure ◽  
Transfer Performance ◽  
Micro Channel ◽  
Comprehensive Performance ◽  
D Model

The influence of the louver fin?s structure on the heat transfer performance of a parallel flow gas cooler is studied, and a 3-D model for an elliptical louver fin is simulated for analysis of the heat transfer and flow resistance characteristics of the fin. The micro-channel structure of the fin is optimized to give the best comprehensive performance evaluation by suitable choice of fin?s thickness and the space between the adjacent louvers for given range of Reynolds number.

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