Numerical investigation of flow parameters on heat transfer in nanofluids in rectangular and triangular channels

Farshid Marzban¹ Mohammadreza Sadredini Mehrjardi² Mehrzad Ahmadi³

1) Master of Mechanical Engineering, Azad University of Yazd, Iran
2) Master of Mechanical Engineering, Azad University of Yazd, Iran
3) Master of Mechanical Engineering, Azad University of Yazd, Iran

IOI Code : XYGD-BCKDA
Publication : The 5th International conference of Sciences and Engineering(5icesconf.com)
Abstract :
    The wide application of heat transfer in various industries causes that industrial designers, as a priority, consider increasing efficiency of heat instruments. Liquids that now are consuming in industries like water, ethylene glycol, motor oil, and so on, compare to metallic solids and oxide solids own very weak heat properties. Hence, it is expected to increase heat transfer properties, like the heat conductance ratio of these liquids through suspension of solid particles in nano-balance inside liquids (nano-liquids). The most important advantages of nano-liquids application in the industry is as follows: improving heat transfer, lowering required power for liquid pumping, size reduction of heat transfer systems, and cost reduction. The most numerical researches about nana-liquids studied the effects of dominant parameters on heat transfer in channels with circular sections. In the present research it is trying to investigate the effects of these parameters and to compare the results with each other through simulation of nano- liquids flow in the rectangular and triangular channels. To conduct this study, single-phased nano-liquid of aluminum oxide water was used and nan-liquid flow at the laminar flow domain was studied. we came to the conclusion that increasing of nano-liquid density would result in increasing of heat displacement ratio in all sections of the above-mentioned channels. Moreover, at all these geometries heat displacement ratio’s changes is linear based on density percentage of nano-particles.

Keywords : numerical analysis nano liquids heat transfer rectangular channel triangular channel