Open Access

ARTICLE

Numerical Study of Natural Convection in a Right Triangular Enclosure with Sinusoidal Hot Wall and Different Configurations of Cold Walls

by Manoj Kr. Triveni¹, Rajsekhar Panua²

1 Department of Mechanical Engineering, the ICFAI University, Agartala, Tripura, 799210.
2 Department of Mechanical Engineering, National Institute of Technology, Agartala, Tripura, 799046.

* Corresponding author: Manoj Kr. Triveni. Email: .

Fluid Dynamics & Materials Processing 2018, 14(1), 1-21. https://doi.org/10.3970/fdmp.2018.014.001

Abstract

The numerical investigation of present work examines the free convection cooling of the base hot wall of a right-angled triangular cavity filled with water. The outline of the base wall is changed from smooth to sinusoidal shapes with different heights. The width (w) of the wave is fixed at 0.2 L and the height (h) of the sinusoidal shape wall is varied from 0.01 H to 0.03 H. The hot wall is cooled from the partially active side and inclined walls which are detached from the middle and structured in four different configurations namely AB, BC, AD, and CD. The problem has been solved to explore the effect of constrained parameters such as a sinusoidal hot wall, partially active cold walls’ configurations and Rayleigh number (10⁵-10⁷) on fluid flow and heat transfer. The study reveals that the flow pattern of the fluid is affected due to the configurations of cold walls and with the increase of Rayleigh number. The enhancement in heat transfer rate, in fact, is found to be more pronounced for the amalgamation of the sinusoidal hot wall and the cold walls configuration AB for all Rayleigh number. However, the blends of these are appealing eloquently at low Rayleigh number.

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