In order to study the influence of double arc oil groove parameters on oil film torque in hydro-viscous drive, the numerical simulation and parameterized analyzing platform were built. The flow field characteristics were carried out usingCFX. The parameter analysis platform was integrated with parameterized design of grooves, numerical simulation, anddesign of experiment (DOE). The effects of groove parameters on output torque were analyzed. The results indicatethat the output torque consists of shear torque and impact torque, and the oil film shear torque plays a more importantrole in total torque. The shear torque is mainly affected by coefficient of effective area and velocity distribution. Thevelocity distribution and dynamic pressure on sidewalls are the main influencing factors on impact torque. The effect ofeccentricity and oil grooves depth on the output torque is positive, but others are negative. In addition, the eccentricityand inner diameter of eccentric circle are sensitive parameters. The effects of oil groove parameters on oil film torqueare analyzed accurately using the parameterized analyzing platform that is integrated with CAD, CFX, and DOE. A newmethod and theoretical foundation are provided for design of complex oil grooves in hydro-viscous drive.
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