摘要
利用AVL-Fire软件对氧化铝纳米冷却液在内燃机水套上的冷却性能进行模拟计算。研究结果表明:当Al_2O_3纳米粒子的浓度为2%时,冷却液的传热系数达到最大值,之后随着浓度的增加而减小;氧化铝纳米冷却液具有极高的沸点,其冷却性能随冷却液的温度升高而增加,并在90℃后急速提升,故氧化铝纳米冷却液适用于高温冷却。此外,纳米冷却液的传热系数在低温下比较低,有利于发动机起动时的暖机作业。
The cooling performance of alumina nano coolant in the engine water jacket was simulated by AVL-Fire software. Results clearly show that when the concentration of Al2O3 nanopartieles is 2%, the heat transfer coefficient of the coolant reaches it＇s maximum value and then decreases with the increase of the concentration. The alumina nano coolant has a high boiling point. Its cooling performance increases with the coolant temperature and increases rapidly after 90℃, so the alumina nano-coolant is suitable for high temperature cooling. Besides, its smaller heat transfer coefficient at low temperature is conducive to the engine warm-up during start-up.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2016年第6期182-187,共6页
Chinese Internal Combustion Engine Engineering
基金
广西教育厅基金项目(2013yb013)
广西科学研究与技术开发计划项目(桂科攻1598007-44)
广西大学博士基金项目(xbz130298)
广西制造系统与先进制造技术重点实验室项目(15-140-30S006)
关键词
内燃机
氧化铝纳米冷却液
冷却性能
传热系数
粒子浓度
温度
IC engine
alumina nano coolant
cooling performance
heat transfercoefficient
particle concentration
temperature
