Abstract
Heat transfer enhancement poses a significant challenge for engineers in various practical fields, including energy-efficient buildings, energy systems, and aviation technologies. The present research deals with the energy transport strengthening using the viscous fluid and solid/porous fins. Numerical simulation of natural convective energy transport of viscous fluid in a cooling cavity with a heat-generating element placed in a finned heat sink was performed. The heat-generating element is characterized by constant volumetric heat generation. The Darcy–Brinkman approach was employed for mathematical description of transport processes within the porous fins. The governing equations formulated using the non-primitive variables were solved by the finite difference method of the second-order accuracy. The influence of the fins material, number, and height on the flow structure and heat transfer was also studied. It was found that the mentioned parameters can be considered as control characteristics for heat transfer and fluid flow for the cooling system.
Highlights
Many different engineering fields demand the heat transfer enhancement that can be achieved using the extended heat transfer surfaces
Siavashi et al [7] computationally scrutinized free convection in a differentially warmed square chamber filled with copper–water nanoliquid, and placed porous fins on the left vertical hot border
It has been revealed that, for high Darcy numbers, energy transport strength can be increased with fins number and fins length, while for low Darcy numbers, one can find the opposite effect
Summary
Many different engineering fields demand the heat transfer enhancement that can be achieved using the extended heat transfer surfaces. Such an approach helps to develop energy-efficient buildings, modern energy and electronic systems, aviation technologies, and others. Hatami [6] has studied thermal convection in a rectangular cabinet with two isothermal fins placed on the lower adiabatic surface under an influence of cold upper border. Siavashi et al [7] computationally scrutinized free convection in a differentially warmed square chamber filled with copper–water nanoliquid, and placed porous fins on the left vertical hot border. Hejri and Malekshah [8] have scrutinized computationally natural convective energy transport and entropy production in a rectangular cabinet saturated with CuO–
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