نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه سمنان، سمنان، ایران
2 دانشکده مکانیک دانشگاه سمنان
3 گروه جامدات،دانشکده مکانیک،دانشگاه سمنان، سمنان، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Considering the importance of using nanofluids in internal combustion engines, it is important to design an optimal cooling system to reduce the temperature to improve engine performance. Previous studies have shown that the thermal conductivity of nanoparticles can be changed by preparing hybrid nanoparticles. In this study, the ability to increase the heat transfer rate of hybrid nanofluid in internal combustion engines has been investigated numerically for single-phase flow. Hybrid nanofluid is composed of SiO2-TiO2 on water-ethylene glycol based with different concentrations of nanoparticles in equal volume fraction of the base fluid. The results show that hybrid nanofluids improve the heat transfer rate, reduce the thermal resistance and increase the coefficient of friction. For concentrations of 1 and 2% SiO2-TiO2-water-ethylene glycol hybrid nanofluid, the heat transfer coefficient compared to the base fluid increased by 8.26 and 13%, respectively. An increase in Nusselt number for hybrid nanofluids compared to base fluid was recorded at 11.23 and 19.18%. In this study, the values of pressure drop, pumping power and average coefficient of friction are also investigated.
کلیدواژهها [English]
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