Application of nanofluids in cooling of engine combustion components
Nanofluids is a kind of high efficient strengthening heat-transfer medium on account of its high thermal conductivity. In this paper, Cu-water nanofluids was applied in the cooling of engine combustion components and the commercial CFD software STAR-CD was employed to perform the 3-D numerical simulation of engine cooling system with different concentration nanofluids. The flow field, the pressure field and the heat-transfer coefficient distribution on the wall was clearly revealed by the simulation. Compared with the water, Cu-water nanofluids can evidently enhance the heat-sinking capability of engine, and the enhancement was larger with increasing the concentration of nanoparticles. When the concentration was 5％, the heat dissipating capacity increased by 43.85％. With a remarkable enhancement on heat-transfer capability, the velocity of fluid in engine cooling jacket kept almost the same, and the total pressure reduction only increased by 7％, which can all be accepted.
nanofluids engine cooling numerical simulation heat-transfer capability
Zhe Xu Minli Bai Jizu Lv
School of Energy and Power Engineering, Dalian University of Technology, Dalian, 116023, China
国际会议
2007年(中国内燃机学会第六届学术年会暨国际内燃机学术研讨会和第六届中国国际内燃机及制造装备展览会)两会一展国际学术会议
上海
英文
100-106
2007-10-09（万方平台首次上网日期，不代表论文的发表时间）