Influence of the Circumferential Inclination of Receiver Holes on the Flow Characteristics of the Pre-Swirl Rotor-Stator Cavity

doi:10.7652/xjtuxb201911004

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Influence of the Circumferential Inclination of Receiver Holes on the Flow Characteristics of the Pre-Swirl Rotor-Stator Cavity

更新时间：2025-07-09

- Influence of the Circumferential Inclination of Receiver Holes on the Flow Characteristics of the Pre-Swirl Rotor-Stator Cavity
- Vol. 53, Issue 11, Pages: 27-33(2019)
- 作者机构：
  
  陕西省叶轮机械及动力装备工程实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201911004
  CLC： TK473
- Online First：10 November 2019，
  
  Published：2019
- 稿件说明：
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Influence of the Circumferential Inclination of Receiver Holes on the Flow Characteristics of the Pre-Swirl Rotor-Stator Cavity[J]. 2019, 53(11): 27-33.
DOI：

Influence of the Circumferential Inclination of Receiver Holes on the Flow Characteristics of the Pre-Swirl Rotor-Stator Cavity[J]. 2019, 53(11): 27-33. DOI： 10.7652/xjtuxb201911004.

摘要

针对燃机透平叶片供气系统中的预旋转静盘腔

为了研究预旋转静盘腔的流动特性

建立了预旋转静盘腔计算模型

在3种预旋比(β

=0.48

0.94

1.41)和3种喷嘴径向位置(r

=0.8

0.9

1.0)下

数值研究了6种接收孔周向倾角(α=70°

90°

100°

110°

120°

135°)对预旋转静盘腔流动特性的影响

分析了接收孔周向倾角对流场分布及绝热预旋效率和对接收孔流量系数的影响规律。研究结果表明:当r

=0.8时

接收孔周向倾角越大

接收孔流量系数值就越大

而且大预旋比下的增强效果显著

但对绝热预旋效率的影响很小

预旋比一定时

每种喷嘴径向位置下均存在最优接收孔周向倾角

此时的绝热预旋效率和接收孔流量系数值达到最大

冷气流过接收孔时的流动损失达到最小

温降值达到最大。

Abstract

The pre-swirl rotor-stator cavity is an important flow unit in the gas turbine blade air supply system. In order to study the flow characteristics of the gas turbine pre-swirl rotor-stator cavity

a pre-swirl rotor-stator cavity calculation model was established. Using three kinds of pre-swirl ratios(-

=0.48

0.94 and 1.41)

three no--le radial positions(r

=0.8

0.9 and 1.0)

and six kinds of circumferential inclination angles of receiver hole(-=70-

90-

100-

110-

120-and 135-)

the he influences of the circumferential inclination angle of the receiver hole on the flow field distribution and the adiabatic pre-swirl efficienc

y as well as the discharge coefficient of the receiver hole were analy-ed. The results show that when the radial position of the no--le r

was 0.8

the larger the circumferential inclination angle of the receiver hole was

the larger the discharge coefficient of the receiver hole would be

and t

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Keywords

references

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