Numerical Simulations on the Flow Characteristics and Temperature Drop of an Aerodynamic Pre-swirl Hole

摘要：

A simple drilled hole and an aerodynamic hole with pre-swirl angle of 20 °were numerically simulated and experimentally measured. The computational models include standalone model which contains only the inlet cavity, pre-swirl hole and outlet cavity, and system model which contains rotating parts on the basis of standalone model. The investigated parameters are: velocity contour, outlet velocity, outlet flow angle, discharge coefficient and pre-swirl effectiveness. The discharge coefficient of standalone model was measured. Results show that the measured and calculated discharge coefficient coincide well, and the discharge coefficient, pre-swirl effectiveness and temperature drop of the aerodynamic hole are markedly increased by more than 20％ comparing with that of the simple drilled hole. Data also reveals that the discharge coefficient and pre-swirl effectiveness obtained from the standalone model are very close to that from the system model, and the temperature drop predicted via the pre-swirl effectiveness of standalone model can reveal the temperature drop characteristics of pre-swirl system indirectly.

关键词： pre-swirl system pre-swirl hole temperature drop discharge coefficient pre-swirl effectiveness

作者: ZHANG Lin LIU Gao-wen JiANG Zhao-wu LI Bi-yun

作者单位: School of Power and Energy, Northwestern Polytechnical University, Xian, China

会议类型: 国际会议

会议名称: 4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)

会议地点: 西安

会议语种:英文

页码: 248-254

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）