矩形S弯扩压器内旋流的发展及其气动特性

推进技术 ›› 1995, Vol. 16 ›› Issue (5): 14-19.

矩形S弯扩压器内旋流的发展及其气动特性

梁德旺,陈贻忠,郭荣伟

南京航空航天大学动力工程系;南京航空航天大学动力工程系;南京航空航天大学动力工程系

发布日期:2021-08-15
基金资助:
航空科学基金

SWIRL DEVELOPMENT AND FLOW CHARACTERISTICS IN A RECTANGULAR S-SHAPED DIFFUSER

Dept. of Power Engineering, Naming Univ. of Aeronautics and Astronautics, Naming, 210016;Dept. of Power Engineering, Naming Univ. of Aeronautics and Astronautics, Naming, 210016;Dept. of Power Engineering, Naming Univ. of Aeronautics and Astronautics, Naming, 210016

Published:2021-08-15

摘要/Abstract

摘要： 通过对矩形Ｓ弯扩压器内流动的详细观察和测量，给出了出口单涡旋流形成的条件及其发展过程、旋流与总压畸变图谱的关系等结果，从而进一步丰富了前人所得出的关于旋流的形成和发展的结论。

关键词: 扩压器;进气道气流;旋涡;流场畸变

Abstract: In this paper,swirl development in a rectangular S-shaped diffuser is described based on detail measurement of static pressure on walls, total pressure contour maps and velocities of secondary flow at exits of first and second bends. The conditions in which a bulk swirl exists at exit of the diffuser, and the relationship between swirls and contour maps of total pressure distortion are also given. The results show that the bulk swirls at the exit of the diffuser are closely related to the flow separation at the entrance of the diffuser and the core of bulk swirl corresPOnds to the area of low total pressure.

Key words: Diffuser;Inlet flow;Swirl;Flow distortion

梁德旺,陈贻忠,郭荣伟. 矩形S弯扩压器内旋流的发展及其气动特性[J]. 推进技术, 1995, 16(5): 14-19.