THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

MIXED CONVECTION INSIDE NANOFLUID FILLED RECTANGULAR ENCLOSURES WITH MOVING BOTTOM WALL

ABSTRACT
The mixed convection fluid flow and heat transfer in lid-driven rectangular enclosures filled with the Al2O3-water nanofluid is investigated numerically. The left and the right vertical walls as well as the top horizontal wall of the enclosure are maintained at a constant cold temperature Tc. The bottom horizontal wall of the enclosure, which moves from left to right, is kept at a constant hot temperature Th, with Th>Tc. The governing equations written in terms of the primitive variables are solved using the finite volume method and the SIMPLER algorithm. Using the developed code, a parametric study is performed and the effects of the Richardson number, the aspect ratio of the enclosure and the volume fraction of the nanoparticles on the fluid flow and heat transfer inside the enclosure are investigated. The results show that at low Richardson numbers, a primary counterclockwise vortex is formed inside the enclosure. More over it is found that for the range of the Richardson number considered, 10-1-101, the average Nusselt number of the hot wall, increases with increasing the volume fraction of the nanoparticles. Also it is observed that the average Nusselt number of the hot wall of tall enclosures is more that to that of the shallow enclosures.
KEYWORDS
PAPER SUBMITTED: 2010-11-29
PAPER REVISED: 2011-03-02
PAPER ACCEPTED: 2011-03-25
DOI REFERENCE: https://doi.org/10.2298/TSCI101129030M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2011, VOLUME 15, ISSUE 3, PAGES [889 - 903]
REFERENCES
  1. Kang, H.U., Kim, S.H., Oh, J.M., Estimation of thermal conductivity of nanofluid using experimental effective particle volume, Exp. Heat Transfer, 19 (2006), pp. 181-191.
  2. Velagapudi, V., Konijeti, R.K., Aduru, C.S.K., Empirical correlation to predict thermophysical and heat transfer characteristics of nanofluids, Thermal Science, 12 (2008), pp. 27-37.
  3. Turgut, A., Tavman, I., Chirtoc, M., Schuchmann, H. P., Sauter, C., Tavman, S., Thermal Conductivity and Viscosity Measurements of Water-Based TiO2 Nanofluids, Int J Thermophys, 30 (2009), pp. 1213-1226.
  4. Rudyak, V.Y., Belkin, A.A., Tomilina, E.A., On the Thermal Conductivity of Nanofluids, Technical Physics Letters, 36 (2010), pp. 660-662.
  5. Murugesan, C., Sivan, S., Limits for thermal conductivity of nanofluids, Thermal Science, 14 (2010), pp. 65-71.
  6. Nayak, A.K., Singh, R.K., Kulkarni, P.P., Measurement of Volumetric Thermal Expansion Coefficient of Various Nanofluids, Technical Physics Letters, 36 (2010), pp. 696-698.
  7. Maiga, S.E.B., Nguyen, C.T., Galanis, N., Roy, G., Heat transfer behaviors of nanofluids in a uniformly heated tube, superlattices and microstructures, 35(2004), pp. 543-557.
  8. Maiga, S.B., Nguyen, C.T., Heat transfer enhancement in turbulent tube flow using Al2O3 nanoparticles suspension, Int. J. Num. Method Heat Fluid Flow, 16 (2006), pp. 275-292.
  9. Behzadmehr, A., Saffar-Avval, M., Galanis, N., Prediction of turbulence forced convection of a nanofluid in a tube with uniform heat flux using two phase approach, Int. J. Heat Fluid Flow, 28 (2007), pp. 211-219.
  10. Santra, A.P., Sen, S., Chakraborty, N., Study of heat transfer due to laminar flow of copper-Water nanofluid through two isothermally heated parallel plate, Int. J. Thermal Sci. 48 (2009), pp. 391-400.
  11. Haghshenas Fard, M., Nasr Esfahany, M., Talaie, M.R., Numerical study of convective heat transfer of nanofluids in a circular tube two-phase model versus single-phase model, Int. Comm. Heat Mass Trans., 37 (2010), pp. 91-97.
  12. Khanafer, K., Vafai K., Lightstone M., Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluid, Int. J. Heat Mass Tran., 46 (2003), pp. 3639-3653.
  13. Abu-Nada, E., Masoud, Z., Hijazi, A., Natural convection heat transfer enhancement in horizontal concentric annuli using nanofluids, Int. Comm. Heat Mass Trans., 35 (2008), pp. 657-665.
  14. Gumguma, S., Tezer-Sezgin, M., DRBEM solution of natural convection flow of nanofluids with a heat source, Engineering Analysis with Boundary Elements, 34 (2010), pp. 727-737.
  15. Sheikhzadeh, G.A., Arefmanesh, A., Mahmoodi, M., Numerical Study of Natural Convection in a Differentially-Heated Rectangular Cavity Filled with TiO2-Water Nanofluid, Journal of Nano Research, 13 (2011), pp. 75-80.
  16. Tiwari, R.K., Das, M.K., Heat transfer augmentation in a two-sided lid-driven differentially heated square cavity utilizing nanofluids, Int. J. Heat Mass Tran., 50 (2007), pp. 2002-2018.
  17. Muthtamilselvan, M., Kandaswamy, P., Lee, J., Heat transfer enhancement of Copper-water nanofluids in a lid-driven enclosure, Commun Nonlinear Sci Numer Simulat., 15 (2010), pp. 1501-1510.
  18. Talebi, F., Mahmoodi, A. H., Shahi, M., Numerical study of mixed convection flows in a square lid-driven cavity utilizing nanofluid, Int. Comm. Heat Mass Trans., 37 (2010), pp. 79-90.
  19. Abu-Nada, E., Chamkha, A. J., Mixed convection flow in a lid driven square enclosure filled with a nanofluid, European Journal of Mechanic B/Fluids, 29 (2010), pp. 472-482.
  20. Mansour, M.A., Mohamed, R.A., Abd-Elaziz, M.M., Ahmed, S.E., Numerical simulation of mixed convection flows in a square lid-driven cavity partially heated from below using nanofluid, International Communications in Heat and Mass Transfer, 37 (2010), pp. 1504-1512.
  21. Arefmanesh, A., Najafi, M., Nikfar, M., Meshless local Petrov-Galerkin simulation of buoyancy-driven fluid flow and heat transfer in a cavity with wavy side walls, CMES: Computer Modeling in Engineering & Sciences, 69 (2010), pp. 91-117.
  22. Brinkman, H.C., The viscosity of concentrated suspensions and solutions, J. Chem. Phys., 20 (1952), pp. 571-581.
  23. Abu-Nada, E., Masoud, Z., Oztop, H.F., Compo, A., Effect of nanofluid variable properties on natural convection in enclosures, Int. J. Thermal Science, 49 (2010), pp. 479-491.
  24. Wang, X., Xu, X., Choi, S.U.S., Thermal conductivity of nanoparticle-fluid mixture, Journal of Thermophysics and Heat Transfer, 13 (1999), pp. 474-480.
  25. Bejan, A., Convection heat transfer, John Wiley & Sons, Inc., Hoboken, New Jersey, USA, 2004.
  26. Maxwell, J., A Treatise on electricity and magnetism, second ed. Oxford University Press, Cambridge, UK, 1904.
  27. Patankar, S.V., Numerical Heat Transfer and Fluid Flow, Hemisphere Publishing Corporation, Taylor and Francis Group, New York 1980.
  28. Oztop, H.F., Dagtekin, I., Mixed convection in two sided lid-driven differentially heated square cavity, International Journal of Heat and Mass Transfer, 47 (2004), pp. 1761-1769.

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence