航空学报 > 1989, Vol. 10 Issue (2): 9-14

新一代引射式跨音速风洞(IDT)高要求指标的研究

凌云沛, 张华, 刘坚   

  1. 北京航空航天大学
  • 收稿日期:1987-10-04 修回日期:1900-01-01 出版日期:1989-02-25 发布日期:1989-02-25

DEVELOPMENT OF A SECOND GENERATION INJECTOR DRIVEN TRANSONIC WIND TUNNEL AT BUAA

Ling Yunpei, Zhang Hua, Liu Jian   

  1. Beijing University of Aeronautics and Astronautics
  • Received:1987-10-04 Revised:1900-01-01 Online:1989-02-25 Published:1989-02-25

摘要:

本文介绍了北京航空航天大学IDT-1甲型引射式前导性跨音速风洞的研究工作,包括风洞实验段动态气流品质及引射效率(GT/Gj)等方面。在采取了多种技术措施后,表征实验段脉动压力的参数值达到或接近Lowson公式和Mabey准则所给出的值,使风洞这类性能进入世界同类研究的先进行列。引射效率和气流的湍流度也达到相当好的水平。实验研究还表明引射驱动方式应用于跨音速风洞具有光明的前景。

关键词: 跨音速风洞, 引射式风洞, 声学特性, 湍流度, 效率

Abstract:

The development of an injector driven transonic pilot wind tunnel (0.1 XXX 0.1m2 in size, type IDT-lA)in BUAA. is presented in this paper. The efforts consist of the improvements in dynamic flow quality and mass ef f iciency(GT/GJ) .Through various technical treatments, the pressure fluctuation level in the test section of IDT-1A, having contented or approached Lowson's Formula and Mabey's Criterion, has met the advanced world standard. The mass ratio and free stream turbulence have attained to considerably good level.Experimental results show a promising prospect for utilizing the injector driven technique in advanced transonic wind tunnels.

Key words: transonic tunnel, ejection type wind tunnel, acoustic characteristics, turbulence, efficiency