The influence of the topology of the heated surface on the efficiency of heat transfer between the wall and liquid coolant
DOI:
https://doi.org/10.7242/2658-705X/2020.2.2Keywords:
convection, turbulence, heat transfer, large-scale circulation, fractal surfacesAbstract
The study is aimed to investigate new ways for enhancement of the heat transfer efficiency. Passive methods are considered to be widely used in heat transfer systems in the housing and communal services sector and industry. Experimental and numerical studies of the properties of the vortex structure of convective flows were carried out depending on the values of the control parameters and the shape of the heated surfaces. The problem was investigated in two-dimensional and threedimensional formulations. Based on numerical simulation data, it was shown that a change in the temperature distribution configuration leads to a significant change in the structure of the large-scale flow. It has been established that the use of fractal heating can significantly reduce the level of heat flow pulsations without loss in heat transfer efficiency.
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