Aerodynamic Characteristic Study of Axial Transonic Highly LoadedContraRotating Turbine
-
摘要: 对转涡轮可有效提高涡轮级效率、减轻涡轮重量、缩短涡轮轴向尺寸和减少涡轮零部件数目.分析了轴流式超跨音高载荷低压无导叶对转涡轮基本气动特性,推导了效率公式,阐述了对转涡轮在减少设计自由度后,其高低压转子气动参数间相互制约关系.研究结果表明:为合理分配对转涡轮高低压转子轮缘功,气动设计参数调整的结果使高压涡轮载荷系数增加,气流转折角变大,气动特征参数明显高于传统同转涡轮.Abstract: Axial contra-rotating turbine(CRT) comparing with the conventional one has a series of advantages, such as more significant stage efficiency, lighter weight, shorter axial size and less components and so on, due mainly to elimination of stationary vanes. Mainly,CRT basic aerodynamic status was analyed, its formula of efficiency was deduced. The parameters' conditionality relation of both high and low pressure rotors each other to be decreased a free design parameter was expounded. The results show that the high pressure turbine has both very high loading coefficient and large turning angle after the design parameters are adjusted to distribute reasonably the rim power of the high and low pressure rotors, its dynamic characteristic parameters are by far higher than the ones of the conventional turbine.
-
[1] Boris A P．New generation of the small turboshaft and turboprop engines in USSR .ASME 90-GT-195,1990 [2] Louis J F. Axial flow contra-rotating turbines ．ASME 85-GT-218, 1985 [3] Huber F W, Branstrom B R. Design and test of a small two stage counter-rotating turbine for rocket engine application ．AIAA 93-2136,1993 [4] Yamamoto A,Outa E. Low-speed annular cascade tests of an ultra-highly loaded turbine with tip-clearance． Part I:near design incidence ．ASME 99-GT-212,1999 [5] Haldeman C W. Experimental and computational investigation of the time-averaged and time-resolved pressure loading on a vaneless counter-rotating turbine . ASME 2000-GT-0445,2000 [6] 方祥军．对转涡轮气动设计与造型研究 ．北京:北京航空航天大学动力系,2000 Fang Xiangjun. Research on the aerodynamics design of axialcontra-rotating turbien including its airfoils . Beijing:Dept. of Propulsion, Beijing University of Aeronautics and Astronautics, 2000(in Chinese) [7] 航空航天工业部高效节能发动机文集委员会．高效节能发动机文集[M]．第五分册．北京:航空工业出版社,1991 Aerospace industry ministry energy efficient engine corpora committee. Energy efficient engine corpora[M]. No.5 Fasicule. Beijing:Aerospace Industry Publishing House, 1991(in Chinese) -
点击查看大图
计量
- 文章访问数: 2513
- HTML全文浏览量: 188
- PDF下载量: 13
- 被引次数: 0
下载:
