The Working Characteristic Simulation And Analysis Of Viscous Coupling

Liquid Viscous Coupling (LVC) is a new technique for improving the performance of vehicle. It get more and more extensive application in the international car field. The viscous coupling is composed of housing, hub, inner plates alternated with outer plates and working fluid-viscous silicone oil. Spacers may be added between every two inner plates or outer plates in some viscous couplings. It has three working states zero torque transfer and sheering silicone oil and self-induced torque amplification. That being an axis-axis differential is the same as a wheel-wheel differential can effectively better the utilization between the tyre and the ground. Zero torque transfer working state is a perfect working state; Silicone oil is sheering by not big relative rotating speed between left wheel and right wheel. The result is torque can be transmitted between them and assigned variably; Once big relative rotating speed happens long, self-induced torque amplification causes rotating elements in the same speed. The torque is transmitted to an extreme extent and auto acquires strong drag force. With the viscous coupling, the auto improves its portrait accelerating ability, driving security, fuel using potential.The viscous coupling is a research hotspot in both china and overseas. Whereas Whereas the theory of STA is not explained convincingly. The important task of this paper is on the basis of the fluid mechanism of computational fluid dynamics of the basic governing equations. It introduced basic equations of CFD, including continuity equation and momentum equation and energy equation. Then I discuss onflow model and method of onflow's numerical simulation. We gained uniform computational format of governing equations. These theory comprehend finding result process of computer. I used method of coupling between liquid and solid in order to simulate work process of LVC.In order to simulate interior the flowing law of LVC, the following steps is put in practice.And so the paper simplifies the heat transfered process and establishes the calculation equations to analyze the temperature of viscous couple making use of method of calorifics. Instantaneous temperature of working process of LVC is found making use of this model.Building the parts and assemble them in CATIA in accordance and saved as stp documentary format.We transform the geometric model into mesh, after mesh quality inspection, we choose better quality of grid to compute model.Using ANSYS Multiphysics simulate model of fluid-structure coupling.We simulate the case, 30000 cs viscosity of silicone oil, velocity margin 100 r/min, between patches space 0.5mm, fill rate of 80%.Fixed Other parameters, one parameter is changed, We analyse impact. We can get following conclusions by simulation:1. When velocity margin increase, torque of transfer by LVC will increase. But increment is not simply a multiple increase.2. With the viscosity of silicone oil increase, torque of transfer by LVC will increase, and if the viscosity increase, the minimum velocity margin will decrease.3. As Silicone oil viscosity changes a little, torque will be affected very small.4. While between patches space decrease torque will increase.5. Speed is foreign to STA.This paper on the research work done by the viscous coupling of a more in-depth, and further enhance viscous coupling of the theoretical analysis and calculation accuracy, for the design and optimization of the future provide the basis.