Effect of rotor-stator rim cavity flow on the turbine

被引：0
|
作者：
Jia, Xingyun [1 ]
Wang, Wenhao [1 ]
Shi, Hongrui [2 ]
Zhang, Le [1 ]
He, Lidong [1 ]
机构：
[1] Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
[2] AECC Harbin Dongan Engine Co Ltd, Harbin 150066, Peoples R China
来源：
INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES | 2021年
基金：
中国博士后科学基金;
关键词：
gas ingestion; interaction; purge flow; rotor-stator cavity; turbine;
D O I：
10.1515/tjeng-2021-0009
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Relative high pressure in the rotor-stator (RS) cavity helps to improve its seal effectiveness. However, every 1% increase in the cavity flow results in a decrease of the stage power of turbine by about 0.32% and a decrease in the aerodynamic efficiency by about 0.33%. With rim cavity flow, the pressure distribution in the suction side of rotor blade domain and the turbine flow structure show obvious circumferential differences, which are caused by the interactions between the RS cavity flow and the mainstream. The flow characteristic in the false externally-induced ingress in rim clearance is proposed for the first time to reveal the flow mechanism in the effect of RS rim cavity flow on the turbine.
引用
收藏
页数：12
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