Research on the velocity shock and energy loss of Tjunction and Arc-juncton in aircraft hydraulic system
Two pumps supply oil in parallel in the large aircraft. Due to different frequencies of the pumps, the flow field at T-junction of two oil convergence remains unclear. In this paper, the flow field of T-junction pipe was analyzed at two working status using Shear Stress Transport (SST) model and Finite Volume Method (FVM) in ANSYS/CFX. Our simulation identified the variation law of velocity peak at T-junction and it is found that the eddy and velocity shock exists in the corner of the T-junction. Aiming at this problem, an arc-junction was designed to replace the traditional T-junction. Based on the simulation, the eddy disappeared and the maximum of velocity peak decreased than T-junction. However, the curvature radius of the arc is a key factor which affects the fluid confluence, so 8 series of ρ was tested to get the law of the variation of max velocity. The velocity shock and energy loss are two evaluated index, and through simulation the optimal ρ was got, it can be concluded that the velocity shock decreased when ρ increased and the energy loss reached the minimum value at ρ = 32.52mm .
flow field analysis T-junction velocity shock energy loss structure optimization
Xin LI Shaoping WANG Jiusheng LIANG
School of Automation and Electrical Engineering Beihang UniversityBeijing, People’s Republic of Chin School of Automation and Electrical Engineering Beihang UniversityBeijing, People’s Republic of Chin School of Automation and Electrical Engineering Beihang University Beijing, People’s Republic of Chi
国际会议
IEEE 10th International Conference on Industrial Informatics(第十届IEEE工业信息学国际学术会议 INDIN2012)
北京
英文
953-958
2012-07-25（万方平台首次上网日期，不代表论文的发表时间）