COMPARATIVE NUMERICAL STUDY OF NATURAL CONVECTION IN SQUARE AND TRIANGULAR CAVITY

COMPARATIVE NUMERICAL STUDY OF NATURAL CONVECTION IN SQUARE AND TRIANGULAR CAVITY

Pranamya Bummerkar ¹, Ritesh Kumar Dewangan ²

¹M. Tech.  Scholar, Department of Mechanical Engineering, Rungta College of Engineering & Technology, Raipur (C.G) - India

²Professor, Department of Mechanical Engineering, Rungta College of Engineering & Technology, Raipur (C.G) – India

Abstract:  This paper is based on the numerical investigation of natural convection of two vertical enclosure of square and triangular cavity with air filled. The vertical cavity consist of adiabatic and hot and cold wall with wide range of Rayleigh number from 10³ to 10⁶ with aspect ratio from 1 to 10 at the interval of 2.5. Flow patterns and isotherm plots were used to display the results, and for every case, local and mean Nusselt values were also produced. The results show that an increase in Rayleigh numbers greatly increases heat transfer, natural convection intensity, and average Nusselt number at a particular aspect ratio.

Keyword: ANN (average Nusselt number), AR (aspect ratio), LNN (local Nusselt number), Nu (Nusselt number), Pr (Prandtl number), Ra (Rayleigh number).