IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v36y2011i8p4879-4896.html
   My bibliography  Save this article

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

Author

Listed:
  • 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.

Suggested Citation

  • 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
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544211003586
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2011.05.033?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    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. 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.
    3. 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.
    4. 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.
    5. 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.
    6. 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.
    7. 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.
    8. 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.
    9. 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.
    10. 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.
    11. Chen, Qun & Wang, Moran & Pan, Ning & Guo, Zeng-Yuan, 2009. "Optimization principles for convective heat transfer," Energy, Elsevier, vol. 34(9), pages 1199-1206.
    12. 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.
    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.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. 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.
    2. 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.
    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.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Biswal, Pratibha & Basak, Tanmay, 2014. "Bejan's heatlines and numerical visualization of convective heat flow in differentially heated enclosures with concave/convex side walls," Energy, Elsevier, vol. 64(C), pages 69-94.
    2. Kaluri, Ram Satish & Basak, Tanmay, 2010. "Analysis of distributed thermal management policy for energy-efficient processing of materials by natural convection," Energy, Elsevier, vol. 35(12), pages 5093-5107.
    3. Basak, Tanmay & Anandalakshmi, R. & Kumar, Pushpendra & Roy, S., 2012. "Entropy generation vs energy flow due to natural convection in a trapezoidal cavity with isothermal and non-isothermal hot bottom wall," Energy, Elsevier, vol. 37(1), pages 514-532.
    4. Liu, Di & Zhao, Fu-Yun & Wang, Han-Qing, 2011. "Passive heat and moisture removal from a natural vented enclosure with a massive wall," Energy, Elsevier, vol. 36(5), pages 2867-2882.
    5. Biswal, Pratibha & Basak, Tanmay, 2017. "Entropy generation vs energy efficiency for natural convection based energy flow in enclosures and various applications: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 1412-1457.
    6. Lior, Noam & Sarmiento-Darkin, Wladimir & Al-Sharqawi, Hassan S., 2006. "The exergy fields in transport processes: Their calculation and use," Energy, Elsevier, vol. 31(5), pages 553-578.
    7. Mikhailenko, Stepan A. & Sheremet, Mikhail A. & Pop, Ioan, 2020. "Natural convection combined with surface radiation in a rotating cavity with an element of variable volumetric heat generation," Energy, Elsevier, vol. 210(C).
    8. Shicheng Wang & Chenyi Xu & Wei Liu & Zhichun Liu, 2019. "Numerical Study on Heat Transfer Performance in Packed Bed," Energies, MDPI, vol. 12(3), pages 1-22, January.
    9. Xu, Mingtian, 2012. "Variational principles in terms of entransy for heat transfer," Energy, Elsevier, vol. 44(1), pages 973-977.
    10. Rokni, Masoud, 2014. "Biomass gasification integrated with a solid oxide fuel cell and Stirling engine," Energy, Elsevier, vol. 77(C), pages 6-18.
    11. Gulcimen, Fevzi & Karakaya, Hakan & Durmus, Aydın, 2016. "Drying of sweet basil with solar air collectors," Renewable Energy, Elsevier, vol. 93(C), pages 77-86.
    12. Fuqiang Qiu & Baoguo Li & Taoping Xu & Dugui He, 2022. "Drying behavior and mathematical modeling of Tenebrio molitor using a closed system heat pump dryer [Evaluation of Tenebrio molitor larvae as an alternative food source]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 17, pages 841-849.
    13. He, Zhongjie & Birgersson, E. & Li, Hua, 2014. "Reduced non-isothermal model for the planar solid oxide fuel cell and stack," Energy, Elsevier, vol. 70(C), pages 478-492.
    14. Xu, Zhe & Zheng, Yuan & Kan, Kan & Chen, Huixiang, 2023. "Flow instability and energy performance of a coastal axial-flow pump as turbine under the influence of upstream waves," Energy, Elsevier, vol. 272(C).
    15. Kou, Xiaoxue & Wang, Ruzhu, 2023. "Thermodynamic analysis of electric to thermal heating pathways coupled with thermal energy storage," Energy, Elsevier, vol. 284(C).
    16. Guo, Jiangfeng & Huai, Xiulan, 2012. "Optimization design of recuperator in a chemical heat pump system based on entransy dissipation theory," Energy, Elsevier, vol. 41(1), pages 335-343.
    17. Oliveira, Flávio A.D. & Carvalho, João A. & Sobrinho, Pedro M. & de Castro, André, 2014. "Analysis of oxy-fuel combustion as an alternative to combustion with air in metal reheating furnaces," Energy, Elsevier, vol. 78(C), pages 290-297.
    18. Chakraborty, Uday Kumar, 2011. "An error in solid oxide fuel cell stack modeling," Energy, Elsevier, vol. 36(2), pages 801-802.
    19. Baïri, A., 2008. "Transient thermal characteristics of airborne electronic equipment with discrete hot bands in square cavities," Applied Energy, Elsevier, vol. 85(10), pages 951-967, October.
    20. Adesanya, Samuel O. & Makinde, Oluwole D., 2015. "Irreversibility analysis in a couple stress film flow along an inclined heated plate with adiabatic free surface," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 432(C), pages 222-229.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:36:y:2011:i:8:p:4879-4896. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.