The temperature distribution of the flow between friction pairs which run under condition of full fluid lubrication was researched in order to determine the main form of heat transfer in hydroviscous drive. The simplified mathematical model for the flow under isothermal, adiabatic and convective thermal boundary conditions were built, taking into account the effect of viscosity-temperature characteristics. The flow between friction pairs was solved by using the commercial computational fluid dynamics code FLUENT. Numerical temperature results were obtained accordingly. Based on the numerical simulations, temperature distributions under different condition of input rotational speed and input flow rate were measured on the hydroviscous drive test rig. It is shown that experimental data are close to numerical results under isothermal thermal boundary condition and deviate badly from that under adiabatic boundary condition. In addition, it is found that temperature decreases as either the gap or input flow rate increases, but it increases as input rotational speed increases．
［1］ TATARA R A, PAYVAR P. Multiple Engagement wet clutch heat transfer model ［J］. Numerical heat transfer, Part A, 2002, 42(3): 215-231． ［2］ LAI Y G. Simulation of heattransfer characteristics of wet clutch engagement processes ［J］. Numerical heat transfer, Part A, 1998, 33(6): 583-597． ［3］ DAVIS C L, SADEGHI F, KROUSGRILL C M. A simplified approach to modeling thermal effects in wet clutch engagement: Analytical and experimental comparison ［J］. ASME Journal of Tribology, 2000, 122(1): 110-118. ［4］ MARKLUND P, MKI R, LARSSON R, et al. Thermal influence on torque transfer of wet clutches in limited slip differential applications ［J］. Tribology International, 2007, 40(5): 876-884． ［5］ 董勋,周益言.油膜调速离合器传动机理研究［J］. 上海交通大学学报, 1991, 25(1): 19-28． DONG Xun, ZHOU Yiyan. A study of transmission on modulated clutch ［J］. Journal of Shanghai Jiaotong University, 1991, 25(1): 19-28． ［6］ 魏宸官,赵家象.液体黏性传动技术［M］.北京：国防工业出版社,1996: 51-82． ［7］ HUANG J H, QIU M X, LIAO L L, et al. Numerical Simulation of Flow Field between Frictional Pairs in Hydroviscous Drive Surface ［J］. Chinese Journal of Mechanical Engineering, 2008, 21(3): 72-75． ［8］ 孟庆睿,侯友夫.液体黏性调速起动瞬态过程数值模拟研究［J］. 摩擦学学报,2009, 29(5): 418-424． MENG Qingrui, HOU Youfu. Numerical simulation on transient behavior of hydroviscous drive speed regulating start ［J］. Tribology, 29(5):418-424． ［9］ MENG Q R, HOU Y F. Mechanism of hydroviscous soft start of belt conveyor ［J］. Journal of China University of Mining & Technology, 2008, 18(3): 459-465. ［10］ 洪跃,刘谨,王云根.液体调速离合器中摩擦副热效应分析［J］. 中国工程科学,2003, 5(9):55-60． HONG Yue, LIU Jin, WANG Yungen. Thermal effect analysis of frictional disk in speeding clutch ［J］. Science Engineering, 2003, 5(9):55-60． ［11］ 何春勇, 刘正林, 吴铸新. 船用水密封推力轴承扇形推力瓦润滑性能数值分析［J］. 润滑与密封, 2009, 34(6): 39-41． HE Chunyong, LIU Zhenglin, WU Zhuxin, et al. Numerical analysis of lubricating properties of sector thrust pad of ship waterlubricated thrust bearing ［J］. Lubrication Engineering, 2009, 34(6):39-41． ［12］ PATANKAR S V.Numerical heat Transfer and fluid flow［M］. Washington, D. C.: Hemisphere Publishing Corporation, 1980:41-137． ［13］ H.史里希廷. 边界层理论［M］, 徐燕侯, 徐立功, 徐书轩, 译. 北京: 科学技术出版社, 1988:309-320．
