Simulation of the internal flow and cavitation of hydrous ethanol-gasoline fuels in the multi-hole direct injector
2022-01-0611
03/29/2022
- Event
- Content
- Hydrous ethanol not only has the advantages of high-octane number and valuable oxygen content, but also reduce the energy consumption in the production process. However, little literature investigated the internal flow and cavitation of hydrous ethanol-gasoline fuels in the multi-hole direct injector. In this simulation, a two-phase fuel flow model in injector is established based on the multi-fluid model of Euler-Euler method, and the accuracy of model is verified. On the basis of this model, the flow of different hydrous ethanol-gasoline blends is calculated under different injection conditions, and the cavitation, flow rate, and velocity at the outlet of the nozzle are predicted. Meanwhile, the influence of temperature and back pressure on the flow is also analyzed. The results show that the use of hydrous ethanol reduces the flow rate, weaken the cavitation in injector, and reduces the turbulent kinetic energy. In addition, with the increase of fuel temperature, the flow velocity increases, the cavitation strengthens, and the turbulent kinetic energy improves. Nevertheless, with increase in fuel injection back pressure, both of the flow rate, cavitation, and turbulent kinetic energy decrease.
- Citation
- Shi, X., Qian, W., Liao, Y., Jiang, Y. et al., "Simulation of the internal flow and cavitation of hydrous ethanol-gasoline fuels in the multi-hole direct injector," SAE Technical Paper 2022-01-0611, 2022, .