Impact Of Radiation Models In CFD Simulations Of Natural Convection Heat Transfer In A Side Heated Square Cavity
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 4
Abstract
The flow progress in a water-filled square cavity which is suddenly heated and cooled on the opposing sidewalls is noticed by using the CFD software package Fluent 6.3. Two approximations were used for CFD simulation of radiation in a liquid cavity, namely, Rosseland approximation the methods of spherical harmonic functions. Comparison of three different approaches to description of the radiation mechanism of energy transfer has made it possible to recognize the special features of these models. Temperature and stream distribution functions are acquired in a large range of the governing criterion. The horizontal boundaries of the cavity are insulated, while the heated and cooled vertical left and right walls are conducting. The present thesis continues the explanation of the flow growth until a steady state is reached. A clear visualization of the interaction between the second wave group and the laminar interruption flow across the roof of the cavity is given. The consequent collapse of the horizontal interruption cause the thermal layer in the cavity core and the adjustment of the vertical boundary layer are also observed. The final state is represented by waves which continuously travel along the boundary layers.
Authors and Affiliations
Sudha Thakur, Saurabh Kumar
Keywords
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