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Journal of Porous Media
Impact-faktor: 1.49 5-jähriger Impact-Faktor: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

Volumes:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.2019028911
pages 481-497

EFFECTS OF VARIABLE TEMPERATURE ON MIXED CONVECTION OF A CU-WATER NANOFLUID IN A DOUBLE-LID-DRIVEN POROUS ENCLOSURE WITH ACTIVE MIDDLE VERTICAL WALL

A. Shamadhani Begum
Department of Science and Humanities, Karpagam College of Engineering, Coimbatore 641032, Tamilnadu, India
N. Nithyadevi
Department of Mathematics, Bharathiar University, Coimbatore 641046, Tamilnadu, India
Hakan F. Öztop
Department of Mechanical Engineering, Technology Faculty, Firat University, Elazig, Turkey; Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 40844, Jeddah 21511, Saudi Arabia
Nidal Abu-Hamdeh
Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 40844, Jeddah 21511, Saudi Arabia

ABSTRAKT

This work is focused on the numerical modeling of laminar mixed convection in a double-lid-driven porous enclosure with sinusoidal heating on vertical walls, thermally insulated horizontal walls, and walls saturated with a Cu-water nanofluid. The dispersed nanoparticle-filled porous enclosure has a moving hot wall at the center. The generalized governing equations with the non-Darcy porous media model are solved numerically using the finite volume method. The present results are found to be in good agreement with the numerical results available in the open literature. The results of the fluid flow and heat transfer characteristics are reported for the Richardson number (Ri) from 0.01 to 100, Darcy number (Da) from 10-3 to 10-6, heat generation parameter (S) from 0 to 10, porosity (ε) of the porous medium from 0.2 to 0.9, solid volume fraction of nanoparticle (φ) from 0.0 to 0.2, and height-to-length aspect ratio (AR) from 1/3 to 3 for the fixed Prandtl number (Pr = 6.2). It is found that the presence of copper nanoparticles in the fluid-saturated porous media assures the enhancement in average Nusselt number value, and the existence of a moving vertical wall helps to maximize the overall heat transfer performance.

REFERENZEN

  1. Abbasian Arani, A.A., Mazrouei Sebdani, S., Mahmoodi, M., Ardeshiri, A., and Aliakbari, M., Numerical Study on Mixed Convection Flow in a Lid-Driven Cavity with Sinusoidal Heating on Sidewalls using Nanofluids, Superlattices Microstruct., vol. 51, pp. 893.

  2. Abu-Nada, E. and Chamkha, A.J., Mixed Convection Flow in a Lid-Driven Inclined Square Enclosure Filled with a Nanofluid, Eur. J. Mech. B-Fluids, vol. 29, pp. 472–482, 2010.

  3. Aminossadati, S.M. and Ghasemi, B., Natural Convection Cooling of a Localized Heat Source at the Bottom of a Nanofluid-Filled Enclosure, Eur. J. Mech. B-Fluids, vol. 28, pp. 630–640, 2009.

  4. Aydin, O., Aiding and Opposing Mechanisms of Mixed Convection in a Shear- and Buoyancy-Driven Cavity, Int. Commun. Heat Mass Transf., vol. 26, pp. 1019–1028, 1999.

  5. Basak, T. and Chamkha, A.J., Heatline Analysis on Natural Convection for Nanofluids Confined within Square Cavities with Various Thermal Boundary Conditions, Int. J. Heat Mass Transf., vol. 55, pp. 5526–5543, 2012.

  6. Beckerman, C., Viskanta, R., and Ramadhyani, S., A Numerical Study of Non-Darcian Natural Convection in a Vertical Enclosure Filled with a Porous Medium, Numer. Heat Transfer, vol. 10, pp. 557–570, 1986.

  7. Ben Cheikh, N., Chamkha, A.J., Ben Beya, B., and Lili, T., Natural Convection of Water-Based Nanofluids in a Square Enclosure with Non-Uniform Heating of the Bottom Wall, J. Mod. Phys., vol. 4, pp. 147–159, 2013.

  8. Brinkman, H.C., The Viscosity of Concentrated Suspensions and Solution, J. Chem. Phys., vol. 20, pp. 571–581, 1952.

  9. Deng, Q.H. and Chang, J.J., Natural Convection in a Rectangular Enclosure with Sinusoidal Temperature Distributions on Both Side Walls, Numer. Heat Transf. A-Appl., vol. 54, pp. 507–524, 2008.

  10. Incropera, F.P., Convection Heat Transfer in Electronic Equipment Cooling, J. Heat Transf., vol. 110, pp. 1097–1111, 1988.

  11. Ingham, D.B. and Pop, I., Eds., Transport Phenomena in Porous Media, Oxford, UK: Elsevier, 2005.

  12. Iwatsu, R., Hyun, J.M., and Kuwahara, K., Mixed Convection in a Driven Cavity with a Stable Vertical Temperature Gradient, Int. J. Heat Mass Transf., vol. 36, pp. 1601–1608, 1993.

  13. Khanafer, K.M. and Chamkha, A.J., Mixed Convection Flow in a Lid-Driven Enclosure Filled with a Fluid-Saturated Porous Medium, Int. J. Heat Mass Transf., vol. 42, pp. 2465–2481, 1999.

  14. Khanafer, K.M., Vafai, K., and Lightstone, M., Buoyancy-Driven Heat Transfer Enhancement in a Two-Dimensional Enclosure Utilizing Nanofluid, Int. J. Heat Mass Transf., vol. 46, pp. 3639–3653, 2003.

  15. Mansour, M.A., Bakeir, Y., and Chamkha, A.J., Numerical Modeling of Natural Convection of a Nanofluid between Two Enclosures, J. Nanofluid., vol. 3, pp. 368–379, 2014.

  16. Maxwell-Garnett, J.C., Colours in Metal Glasses and in Metallic Films, Phil. Trans. R. Soc. A, vol. 203, pp. 385–420, 1904.

  17. Morzynski, M. and Popiel, C.O., Laminar Heat Transfer in a Two Dimensional Cavity Covered by a Moving Wall, Numer. Heat Transf., vol. 13, pp. 265–273, 1988.

  18. Nagarajan, N., Oztop, H.F., Shamadhani Begum, A., and Al-Salem, K., Numerical Analysis of Effect of Magnetic Field on Combined Surface Tension and Buoyancy Driven Convection in Partially Heated Open Enclosure, Int. J. Numer. Method H., vol. 25, pp. 1793–1.

  19. Nguyen, M.T., Aly, A.M., and Lee, S.-W., Natural Convection in a Non-Darcy Porous Cavity Filled with Cu–Water Nanofluid using the Characteristic-Based Split Procedure in Finite-Element Method, Numer. Heat Transf. A-Appl., vol. 67, pp. 224–247, 2015.

  20. Nield, D.A. and Bejan, A., Convection in Porous Media, 4th ed., New York: Springer-Verlag, 2013.

  21. Nithyadevi, N. and Rajarathinam, R., Non-Darcy Double DiffusiveMixed Convection for Nanofluid with Soret and Dufour Effects in a Lid-Driven Cavity, Int. J. Nanoparticle, vol. 8, pp. 218–240, 2015.

  22. Nithyadevi, N. and Shamadhani Begum, A., Heat Transfer Enhancement of Cu-Water Nanofluid in a Porous Square Enclosure Driven by an Incessantly Moving Flat Plate, Procedia Eng., vol. 127, pp. 279–286, 2015.

  23. Ostrach, S., Natural Convection in Enclosures, J. Heat Transf., vol. 110, pp. 1175–1190, 1988.

  24. Oztop, H.F. and Abu-Nada, E., Numerical Study of Natural Convection in Partially Heated Rectangular Enclosures Filled with Nanofluids, Int. J. Heat Fluid Flow, vol. 29, pp. 1326–1336, 2008.

  25. Oztop, H.F., Abu-Nada, E., Varol, Y., and Al-Salem, K., Computational Analysis of Non-Isothermal Temperature Distribution on Natural Convection in Nanofluid Filled Enclosures, Superlattices Microstruct., vol. 49, pp. 453–467, 2011.

  26. Patankar, S.V., Numerical Heat Transfer and Fluid Flow, New York: Hemisphere Publishing Corporation, 1980.

  27. Shamadhani Begum, A., Nithyadevi, N., Oztop, H.F., and Al-Salem, K., Numerical Simulation of MHD Mixed Convection in a Nanofluid Filled Non-Darcy Porous Enclosure, Int. J. Mech. Sci., vol. 130, pp. 154–166, 2017.

  28. Sharif, M.A.R., Laminar Mixed Convection in Shallow Inclined Driven Cavities with Hot Moving Lid on Top and Cooled from Bottom, Appl. Therm. Eng., vol. 27, pp. 1036–1042, 2007.

  29. Talebi, F., Mahmoudi, A.H., and Shahi, M., Numerical Study of Mixed Convection Flows in a Square Lid-Driven Cavity Utilizing Nanofluid, Int. Commun. Heat Mass Transfer, vol. 37, pp. 79–90, 2010.

  30. Tiwari, R.K. and Das, M.K., Heat Transfer Augmentation in a Two-Sided Lid-Driven Differentially Heated Square Cavity Utilizing Nanofluids, Int. J. Heat Mass Transf., vol. 50, pp. 2002–2018, 2007.

  31. Waheed, M.A., Mixed Convective Heat Transfer in Rectangular Enclosures Driven by a Continuously Moving Horizontal Plate, Int. J. Heat Mass Transf., vol. 52, pp. 5055–5063, 2009.

  32. Waheed, M.A., Odewole, G.A., and Alagbe, S.O., Mixed Convective Heat Transfer in Rectangular Enclosures Filled with Porous Media, ARPN J. Eng. Appl. Sci., vol. 6, pp. 47–60, 2011.