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Heatline based thermal management for natural convection within right-angled porous triangular enclosures with various thermal conditions of walls

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  • Anandalakshmi, R.
  • Kaluri, Ram Satish
  • Basak, Tanmay

Abstract

Analysis of natural convection in porous triangles have many important energy related applications in geophysical and solar energy fields. A numerical study on heat distribution and thermal mixing during steady laminar natural convective flow inside a right-angled triangular enclosure filled with porous media subjected to various wall boundary conditions is investigated in this study using Bejan’s heatlines approach. Influence of various thermal boundary conditions and inclination angles (φ) on evaluation of complex heat flow patterns are studied as a function of Darcy numbers (Da) for various regimes of Prandtl (Pr) and Rayleigh (Ra) numbers. Studies illustrate that maximum heat transfer occurs at the top vertex for lower top angle (φ=15∘) at higher Da(Da=10−3). As φ increases to 45∘, the maximum heat flux at the top vertex decreases and thermal mixing increases irrespective of Da and Pr. The enhanced convection at higher Da significantly affects the heat flow distribution, which is clearly depicted by high local Nusselt numbers at Da=10−3. It is also found that isothermal heating of walls enhances the heat distribution and thermal mixing. Overall, it is shown that heatlines provide suitable guideline on thermal management in porous right-angled triangular enclosures with various heating strategies.

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  • Anandalakshmi, R. & Kaluri, Ram Satish & Basak, Tanmay, 2011. "Heatline based thermal management for natural convection within right-angled porous triangular enclosures with various thermal conditions of walls," Energy, Elsevier, vol. 36(8), pages 4879-4896.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:8:p:4879-4896
    DOI: 10.1016/j.energy.2011.05.033
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    1. Kececioglu, Ifiyenia & Lin, Yi, 1993. "Melting of a porous medium saturated with water near its density maximum," Energy, Elsevier, vol. 18(9), pages 913-931.
    2. Rathish Kumar, B.V. & Kumar, Bipin, 2004. "Parallel computation of natural convection in trapezoidal porous enclosures," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 65(3), pages 221-229.
    3. Antar, Mohamed A., 2010. "Thermal radiation role in conjugate heat transfer across a multiple-cavity building block," Energy, Elsevier, vol. 35(8), pages 3508-3516.
    4. Mahmud, Shohel & Fraser, Roydon Andrew, 2003. "Mixed convection–radiation interaction in a vertical porous channel: Entropy generation," Energy, Elsevier, vol. 28(15), pages 1557-1577.
    5. Arpino, F. & Massarotti, N., 2009. "Numerical simulation of mass and energy transport phenomena in solid oxide fuel cells," Energy, Elsevier, vol. 34(12), pages 2033-2041.
    6. Barthels, H. & Rehm, W. & Jahn, W., 1991. "Theoretical and experimental investigations into the safety behavior of small HTRs under natural convection conditions," Energy, Elsevier, vol. 16(1), pages 371-380.
    7. Lin, Wenxian & Armfield, S.W., 1998. "Direct numerical simulation of transient performance in a rectangular closure with a non-staggered mesh scheme," Energy, Elsevier, vol. 23(9), pages 719-723.
    8. Chen, Qun & Wang, Moran & Pan, Ning & Guo, Zeng-Yuan, 2009. "Optimization principles for convective heat transfer," Energy, Elsevier, vol. 34(9), pages 1199-1206.
    9. da Silva, A.K. & Lorente, S. & Bejan, A., 2006. "Constructal multi-scale structures for maximal heat transfer density," Energy, Elsevier, vol. 31(5), pages 620-635.
    10. Kheireddine, A.S. & Sanda, M.Houla & Chaturvedi, S.K. & Mohieldin, T.O., 1997. "Numerical prediction of pressure loss coefficient and induced mass flux for laminal natural convective flow in a vertical channel," Energy, Elsevier, vol. 22(4), pages 413-423.
    11. Magalhães Sobrinho, Pedro & Carvalho, João A. & Luz Silveira, José & Magalhães Filho, Paulo, 2000. "Analysis of aluminum plates under heating in electrical and natural gas furnaces," Energy, Elsevier, vol. 25(10), pages 975-987.
    12. El-Sebaii, A.A. & Aboul-Enein, S. & Ramadan, M.R.I. & El-Gohary, H.G., 2002. "Empirical correlations for drying kinetics of some fruits and vegetables," Energy, Elsevier, vol. 27(9), pages 845-859.
    13. Abu-Hijleh, B.A/K & Abu-Qudais, M & Abu Nada, E, 1999. "Numerical prediction of entropy generation due to natural convection from a horizontal cylinder," Energy, Elsevier, vol. 24(4), pages 327-333.
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    Cited by:

    1. Saidi, Majid & Karimi, Gholamreza, 2014. "Free convection cooling in modified L-shape enclosures using copper–water nanofluid," Energy, Elsevier, vol. 70(C), pages 251-271.
    2. Sheikholeslami, M. & Gorji-Bandpy, M. & Ganji, D.D., 2013. "Numerical investigation of MHD effects on Al2O3–water nanofluid flow and heat transfer in a semi-annulus enclosure using LBM," Energy, Elsevier, vol. 60(C), pages 501-510.
    3. Bhardwaj, Saurabh & Dalal, Amaresh & Pati, Sukumar, 2015. "Influence of wavy wall and non-uniform heating on natural convection heat transfer and entropy generation inside porous complex enclosure," Energy, Elsevier, vol. 79(C), pages 467-481.

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