Abstract
Cooling of heat-generating elements is a challenging problem in engineering. In this article, the transient free convection of a temperature-dependent viscosity liquid inside the porous cavity with copper radiator and the heat-generating element is studied using mathematical modeling techniques. The vertical and top walls of the chamber are kept at low constant temperature, while the bottom wall is kept adiabatic. The working fluid is a heat-conducting liquid with temperature-dependent viscosity. A mathematical model is developed based on dimensionless stream function, vorticity, and temperature variables. The governing properties are the variable viscosity, geometric parameters of the radiator, and size of thermally insulated strip on vertical surfaces of the cavity. The effect of these parameters on the energy transport and circulation patterns are analyzed numerically. Based on the numerical results obtained, recommendations are given on the optimal values of the governing parameters for the effective operation of the cooling system. It is shown that the optimal number of radiator fins for the cooling system configuration under consideration is 3. In addition, the thermal insulation of the vertical walls and the increased thickness of the radiator fins have a negative effect on the operation of the cooling system.
Highlights
Development of modern engineering fields is related to heat transfer enhancement in creation of effective cooling systems
The results showed that the geometry of channels inside a radiator played the main role in the working of this cooling system
A numerical simulation has been conducted in a broad range of the governing parameters such as geometry characteristics of the heat sink, viscosity, and time
Summary
Development of modern engineering fields is related to heat transfer enhancement in creation of effective cooling systems. Well-timed heat removal from the heat-generating elements allows an increase in the operation life of the whole electronic apparatus. For an intensification of the energy removal from such elements, it is possible to use the porous insertions combined with heat sinks and special heat transfer fluids. For such systems, natural convective heat transfer can be considered as a main heat removal mechanism [1,2,3,4]. Often the dependence of viscosity on ambient temperature, fluid density or fluid pressure is considered [6,7,8]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
