摘要
活塞内冷却油腔采用高效换热性能的传热工质可以有效提高活塞的冷却效果,因此,将50 nm的Cu和金刚石颗粒添加到传统润滑油中,制成纳米润滑油并应用于活塞内冷却油腔.通过活塞组-气缸套三维耦合数值模拟研究内冷却油腔使用纳米流体对活塞组传热效果的影响.结果表明:与使用传统润滑油相比,活塞内冷却油腔应用体积分数为1%,2%,3%的纳米Cu润滑油和纳米金刚石润滑油作为冷却介质,可以有效地降低活塞温度.纳米金刚石润滑油对活塞组的冷却效果优于纳米Cu润滑油.
Using high efficient heat transfer fluids can effectively improve the cooling performance of the piston in gallery. So diamond and Cu nanoparticles（ 50 nm） were added into the engine oil to prepare the cooling nanofluids used as the cooling medium for piston cooling gallery. Based on the liquid-solid coupled thermodynamic method,the numerical simulation was carried out to investigate the influence of the cooling nanofluids on the heat transfer. The result shows that the temperature of piston can be reduced by using nanofluids with the volume fractions of 1%,2%and 3%. The cooling performance of diamond nanofluids is revealed better than that of the Cu ones.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第2期227-231,共5页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51276031
51006015)
辽宁省教育厅科学研究项目(L2012164)
