Effect of oil film temperature on hydro-viscous drive characteristics

To explore the effect of oil film temperature on hydro-viscous drive (HVD), a 3D physical model of the oil film was established. According to the principle of computational fluid dynamics (CFD), the model was solved by using finite volume method (FVM), and a HVD test-bed was developed to verify the theoretical analysis. The results show that the relationship between the temperature and the time is approximately linear. Meanwhile, the temperature of the oil film goes up gradually along the radial direction, and its value at zone without groove is much higher than that at zone with groove. The theoretical torque transferred by the oil film is larger than the experimental value, and the torque reduces when considering the effect of oil film temperature. The research results play a guiding role in the thorough research on the HVD technology, and provide technical support for the design of the HVD device.