Numerical Investigation of Heat Transfer in a Sintered Porous Fin in a Channel Flow with the Aim of Material Determination

Document Type : Full Length Research Article

Authors

1 Department of Mechanical Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran

2 Energy and Sustainable Development Research Center, Semnan Branch, Islamic Azad University, Semnan, Iran.

3 Department of Mechanical Engineering, Semnan University, Semnan, Iran

Abstract

Extended surfaces are one of the most important approaches to increase the heat transfer rate. According to the Fourier law, the heat transfer increases by increasing the contact surface of body and fluid. In this study, the effect of heat transfer has been investigated on two sets of engineered porous fins, in which the balls with different materials are sintered together. The fluid flow through the channel is considered incompressible, steady and three-dimensional. In this study, fins made of copper, aluminum and steel balls with 0.6 and 1.7 mm diameters in single-row, two-row modes are studied, and the heat transfer and pressure drop through these fins are checked. Also, the surface and volume analysis of the rigid and porous fins is also provided. In addition, the effect of diameter and material of the balls on the temperature distribution and heat transfer coefficient is examined in two cases of constant flux and constant temperature at the base. The results show that the steel fin has a different heat transfer behavior compared to other fins; the suitable material for the constant pressure and constant flux are copper and aluminum, respectively. Also, it is found that utilization of this type of connection decrease the volume of the fin about 39% of and increase the surface are about 37%.

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References

[1]        Y. A. Cengel, M. A. Boles, M. Kanoglu, Thermodynamics: an engineering approach. 5th edition, McGraw-Hill New York, (2011).
[2]           A. Bejan, A. M. Morega, Optimal arrays of pin fins and plate fins in laminar forced convection. Journal of Heat Transfer, 115(1), 75-81, (1993).
[3]           R. A.Wirtz, A semi-empirical model for porous media heat exchanger design. ASME-PUBLICATIONS-HTD, 349, 155-162, (1997).
[4]           T. M. Jeng, S.C. Tzeng, Numerical study of confined slot jet impinging on porous metallic foam heat sink. International Journal of Heat and Mass Transfer, 48(23), 4685-4694, (2005).
[5]           J. Ma, Y. Sun, B. Li, Simulation of combined conductive, convective and radiative heat transfer in moving irregular porous fins by spectral element method, International Journal of Thermal Sciences, 118, 475-487, (2017).
[6] H. Chen, J. Ma, H. Liu, Least square spectral collocation method for nonlinear heat transfer in moving porous plate with convective and radiative boundary conditions, International Journal of Thermal Sciences, 132, 335-343, (2018).
[7] J. Ma, Y. Sun, B. Li, Hao Chen, Spectral collocation method for radiative–conductive porous fin with temperature dependent properties, Energy Conversion and Management, 111, 279-288, (2016).
[8]           M. Hamdan, and A.N. Moh’d, The use of porous fins for heat transfer augmentation in parallel-plate channels. Transport in porous media, 84(2), 409-420, (2010).
[9] L. Chuan, X-D. Wang, T-H. Wang,W-M. Yan, Fluid flow and heat transfer in microchannel heat sink based on porous fin design concept. International Communications in Heat and Mass Transfer, 65, 52-57, (2015).
[10]            G. Lu, J. Zhao, L. Lin, X-D. Wang, W-M. Yan, A new scheme for reducing pressure drop and thermal resistance simultaneously in microchannel heat sinks with wavy porous fins. International Journal of Heat and Mass Transfer, 111, 1071-1078, (2017).
[11]            K.S. Ong, Heat spreading and heat transfer coefficient with fin heat sink. Applied Thermal Engineering, 112, 1638-1647, (2017).
[12]            M. Lindstedt, R. Karvinen, Conjugated heat transfer from a uniformly heated plate and a plate fin with uniform base heat flux. International Journal of Heat and Mass Transfer, 107, 89-95, (2017).
[13]            A. Bejan, Entropy generation minimization: The new thermodynamics of finite size devices and finite time processes. Journal of Applied Physics, 79(3), 1191-1218, (1996).
[14]            L. Chen, Constructal entropy generation rate minimization for cylindrical pin-fin heat sinks. International Journal of Thermal Sciences, 111, 168-174, (2017).
[15]            M. Mesgarpour, A. Heydari, S. Saedodin, Numerical analysis of heat transfer and fluid flow in the bundle of porous tapered fins, International Journal of Thermal Sciences, 135, 398–409, (2019).
[16]            PX. Jiang, M. Li, T.J. Lu, L. Yu, Z.P. Ren, Experimental research on convection heat transfer in sintered porous plate channels. International Journal of Heat and Mass Transfer, 47, 2085–2096, (2004).
[17]            PX. Jiang, M. Li, Y.C. Ma, Z.P. Ren, Boundary conditions and wall effect for forced convection heat transfer in sintered porous plate channels, International Journal of Heat and Mass Transfer, 47, 2073-2083, (2004).
[18]            PX. Jiang, X.C. Lu, Numerical simulation of fluid flow and convection heat transfer in sintered porous plate channels. International Journal of Heat and Mass Transfer. 49(9), 1685-95, (2006).
[19]            M. Mesgarpour, A. Heydari, S. Saedodin," Investigating the effect of connection type of a sintered porous fin through a channel on heat transfer and fluid flow", Journal of Thermal Analysis and Calorimetry, (Doi: 10.1007/s10973-018-7356-y).
[20]            A. Bejan, Designed Porous Media, in Emerging Technologies and Techniques in Porous Media, Springer, 337-349, (2004).
[21]            C. K. Ho, S.W. Webb, Gas transport in porous media, Springer, (2006).
[22]            D. A. Nield, A. Bejan, Convection in porous media. Springer, (2006).
[23]             FLUENT User’s Guide, Release 6.1. FLUENT Inc., Lebanon, (2001).
[24]            P. M. Adler, Porous media: geometry and transports, Butterworth-Heinemann, (1992).
[25]            J. Bear, M.Y. Corapcioglu, Fundamentals of transport phenomena in porous media, M. Nijhoff, (1984).
[26]            J. B. Keller, Flow in random porous media. Transport in Porous Media,. 43(3), 395-406, (2001).
[27]            K. Vafai, Handbook of porous media, Crc Press, (2009).

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History

  • Receive Date: 05 August 2018
  • Revise Date: 17 December 2018
  • Accept Date: 29 December 2018

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