Volume 19, Issue 6 (June 2019)                   Modares Mechanical Engineering 2019, 19(6): 1483-1494 | Back to browse issues page

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1- Mechanical Engineering Department, University of Guilan, Rasht, Iran
2- Mechanical Engineering Department, University of Guilan, Rasht, Iran , haghighi_p@guilan.ac.ir
Abstract:   (3093 Views)

In order to evaluate the ability of to simulate , mixed convective heat transfer of a in a square lid-driven cavity has been numerically studied. The governing equations were solved by , using . In this paper, the effect of parameters like the Grashof number, the volume fraction of , and ratio on the heat transfer of Al2O3-Water have been investigated. Also, to calculate fluid viscosity and thermal conductivity coefficient of the , the temperature-depended variable model was used, considering the Brownian motion of the particle. The results showed that the increase in amplifies the buoyancy force and enhances the Nusselt number as well as heat transfer rate. Also, the increase in viscosity at low Grashof numbers intensifies the forced convection and increases the Nusselt number over the hot wall. However, at Gr=105, the increase in viscosity up to K=1 leads to the decrease in the amount of heat transfer, but its further increase entails the increase in heat transfer. Although the addition of to the fluid improves heat transfer rate, the extent of improvement at is lower than that in the Newtonian .

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Article Type: Original Research | Subject: Non-Newtonian Fluid Mechanics
Received: 2018/06/14 | Accepted: 2018/10/11 | Published: 2019/06/1

1. Eringen AC. Theory of microfluids. Journal of Applied Mathematics and Mechanics. 1966;16:1-18. [Link]
2. Cemal Eringen A. Simple microfluids. International Journal of Engineering Science. 1964;2(2):205-217. [Link] [DOI:10.1016/0020-7225(64)90005-9]
3. Bourantas GC, Loukopoulos VC. Modeling the natural convective flow of micropolar nanofluids. International Journal of Heat and Mass Transfer. 2014;68:35-41. [Link] [DOI:10.1016/j.ijheatmasstransfer.2013.09.006]
4. Hashemi H, Namazian Z, Hashem Zadeh SM, Mehryan SAM. MHD natural convection of a micropolar nanofluid flowing inside a radiative porous medium under LTNE condition with an elliptical heat source. Journal of Molecular Liquids. 2018;271:914-925. [Link] [DOI:10.1016/j.molliq.2018.09.010]
5. Bhargava R, Agarwal RS, Kumar L, Takhar HS. Finite element study of mixed convection micropolar flow in a vertical circular pipe with variable surface conditions. International Journal of Engineering Science. 2004;42(1):13-27. [Link] [DOI:10.1016/S0020-7225(03)00278-7]
6. Ikbal MA, Chakravarty S, Mandal PK. Two-layered micropolar fluid flow through stenosed artery: Effect of peripheral layer thickness. Computers and Mathematics with Applications. 2009;58(7):1328-1339. [Link] [DOI:10.1016/j.camwa.2009.07.023]
7. Aydin O, Pop I. Natural convection from a discrete heater in enclosures filled with a micropolar fluid. International Journal of Engineering Science. 2005;43(19-20):1409-1418. [Link] [DOI:10.1016/j.ijengsci.2005.06.005]
8. Aydın O, Pop I. Natural convection in a differentially heated enclosure filled with a micropolar fluid. International Journal of Thermal Sciences. 2007;46(10):963-969. [Link] [DOI:10.1016/j.ijthermalsci.2006.11.018]
9. Hsu TH, Wang SG. Mixed convection of micropolar fluids in a cavity. International Journal of Heat and Mass Transfer. 2000;43(9):1563-1572. [Link] [DOI:10.1016/S0017-9310(99)00242-2]
10. Saleem M, Asghar S, Hossain MA. Natural convection flow of micropolar fluid in a rectangular cavity heated from below with cold sidewalls. Mathematical and Computer Modelling. 2011;54(1-2):508-518. [Link] [DOI:10.1016/j.mcm.2011.02.041]
11. Ahmed SE, Mansour MA, Hussein AK, Sivasankaran S. Mixed convection from a discrete heat source in enclosures with two adjacent moving walls and filled with micropolar nanofluids. Engineering Science and Technology an International Journal. 2016;19(1):364-376. [Link] [DOI:10.1016/j.jestch.2015.08.005]
12. Maxwell JC. A treatise on electricity and magnetism. Wotton-under-Edge: Clarendon Press; 1973. [Link]
13. Sheikhzadeh GA, Khorasanizadeh H, Ghaffari SP. Mixed convection of variable properties Al2O3-EG-Water nanofluid in a two-dimensional lid-driven enclosure. Transport Phenomena in Nano and Micro Scales. 2013;1(2):75-92. [Link]
14. Khanafer K, Vafai K, Lightstone M. Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids. International Journal of Heat and Mass Transfer. 2003;46(19):3639-3653. [Link] [DOI:10.1016/S0017-9310(03)00156-X]
15. Vajjha RS, Das DK. Experimental determination of thermal conductivity of three nanofluids and development of new correlations. International Journal of Heat and Mass Transfer. 2009;52(21-22):4675-4682. [Link] [DOI:10.1016/j.ijheatmasstransfer.2009.06.027]
16. Patankar SV. Numerical heat transfer and fluid flow. Boca Raton: CRC Press; 1980. [Link]
17. Zadravec M, Hriberšek M, Škerget L. Natural convection of micropolar fluid in an enclosure with boundary element method. Engineering Analysis with Boundary Elements. 2009;33(4):485-492. [Link] [DOI:10.1016/j.enganabound.2008.08.013]
18. Khanafer KM, Al-Amiri AM, Pop I. Numerical simulation of unsteady mixed convection in a driven cavity using an externally excited sliding lid. European Journal of Mechanics B Fluids. 2007;26(5):669-687. [Link] [DOI:10.1016/j.euromechflu.2006.06.006]
19. Waheed MA. Mixed convective heat transfer in rectangular enclosures driven by a continuously moving horizontal plate. International Journal of Heat and Mass Transfer. 2009;52(21-22):5055-5063. [Link] [DOI:10.1016/j.ijheatmasstransfer.2009.05.011]
20. Abu-Nada E, Chamkha AJ. Mixed convection flow in a lid-driven inclined square enclosure filled with a nanofluid. European Journal of Mechanics B Fluids. 2010;29(6):472-482. [Link] [DOI:10.1016/j.euromechflu.2010.06.008]

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