NDLI: Natural Convection With Non-Newtonian Shear-Thinning Power Law Fluids in Inclined Two Dimensional Rectangular Cavities

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Khezzar, Lyes Siginer, Dennis
Copyright Year	2009
Abstract	Steady two-dimensional natural convection in rectangular cavities has been investigated numerically. The conservation equations of mass, momentum and energy under the assumption of a Newtonian Boussinesq fluid have been solved using the finite volume technique embedded in the Fluent code for a Newtonian (water) and three non Newtonian carbopol fluids. The highly accurate Quick differential scheme was used for discretization. The computations were performed for one Rayleigh number, based on cavity height, of 105 and a Prandtl number of 10 and 700, 6,000 and 1.2×104 for the Newtonian and the three non-Newtonian fluids respectively. In all of the numerical experiments, the channel is heated from below and cooled from the top with insulated side-walls and the inclination angle is varied. The simulations have been carried out for one aspect ratio of 6. Comparison between the Newtonian and the non-Newtonian cases is conducted based on the behaviour of the average Nusselt number with angle of inclination. Both Newtonian and non-Newtonian fluids exhibit similar behavior with a sudden drop around an angle of 50° associated with flow mode transition from multi-cell to single-cell mode.
Starting Page	141
Ending Page	145
Page Count	5
File Format	PDF
ISBN	9780791843826
DOI	10.1115/IMECE2009-12748
e-ISBN	9780791838631
Volume Number	Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Water Momentum Natural convection Rayleigh number Flow (dynamics) Non-newtonian fluids Cavities Fluids Prandtl number Simulation Computation Engineering simulation Shear (mechanics)
Content Type	Text
Resource Type	Article

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