Visual System Analysis of High Speed on-off Valve Based on Multi-physics Simulation
2022-01-0465
03/29/2022
- Event
- Content
- High speed on-off valves(HSV) are widely used in advanced hydraulic braking actuators, including the regenerative braking system and the active safety system, which take crucial part in improving the energy efficiency and safety performance of vehicles. As a component involving multiple physical fields, the HSV is affected by interaction of fluid, electromagnetic, mechanical, and even the temperature. Since the opening of the HSV is small and the flow speed is high, cavitation and vortex are inevitably brought out so that increase the valve’s noise and instability. However, it is costly and complex to observe the flow status by visual fluid experiments. Hence a visual multi-physics system simulation model of HSVs is explored in this paper, in which the flow field model of the HSV built by the computational fluid dynamic (CFD) is co-simulated with the model of hydraulic control actuator established by AMESim. Accordingly, the pressure and the opening of the HSV are variable with actual working state of the braking system during the simulation. The real-time flow status inside the HSV is visually obtained. As a result, it can serve as references for reducing the hydraulic noise, optimizing the structure and control strategy. In brief, the paper would be organized as follows. In section1, the related studying achievements by some other researchers are introduced. In section 2, the multi-physics mathematical model of high speed on-off valve is presented. In section 3, the flow field simulation model is established，and the co-simulation model built by AMESim and Fluent is presented. In Section4, the simulation model is verified by the tests are taken at the hardware in loop testing bench. The simulation results and tests results are shown and discussed. Finally, some conclusions are presented in Section5.
- Citation
- Meng, A., "Visual System Analysis of High Speed on-off Valve Based on Multi-physics Simulation ," SAE Technical Paper 2022-01-0465, 2022, .