University of Khartoum

Numerical Simulation of the Effect of Different Shapes of Containers on the Transient Convection in Cooled Cavity

Numerical Simulation of the Effect of Different Shapes of Containers on the Transient Convection in Cooled Cavity

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Title: Numerical Simulation of the Effect of Different Shapes of Containers on the Transient Convection in Cooled Cavity
Author: Gasmalseed, Nowar Gurashi Abdallah
Abstract: Natural convection in enclosures is an active research topic in recent years due to its importation of fundamental studies and applications. Natural convection is caused by buoyancy forces due to density differences caused by temperature variation in the fluid. The main objective of this study was to investigate the effectiveness of the different container’s shapes on transient natural convection in cooled cavity. The first step towards this is to analyze numerically the fluid in two dimensional rectangular cavity, where the vertical walls are cooled, other walls are isolated and the fluid remains hot. The finite volume method was adopted to solve the two dimensional governing equations using the commercial FLUENT software package. The results showed that in the flow regimes considered there is a difference in thermal boundary layer thickness that the horizontal intrusion layer has uniform thickness for rectangular and pyramid flow but increase towards the symmetry axis for cylindrical and conical flow. The result of the effect of shapes on the total average temperature showed that the conical geometry was the most efficient for cooling the fluid because it achieved the lowest total average temperature and the fastest shape for cooling the fluid.
URI: http://khartoumspace.uofk.edu/123456789/25554


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