Numerical Investigation into Bristle-Rotor Contact Force of Brush Seals

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Numerical Investigation into Bristle-Rotor Contact Force of Brush Seals

更新时间：2025-07-09

- Numerical Investigation into Bristle-Rotor Contact Force of Brush Seals
- Vol. 44, Issue 7, Pages: 23-27(2010)
- 作者机构：
  
  西安交通大学叶轮机械研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK262
- Online First：10 July 2010，
  
  Published：2010
- 稿件说明：
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Numerical Investigation into Bristle-Rotor Contact Force of Brush Seals[J]. 2010, 44(7): 23-27.
DOI：

Numerical Investigation into Bristle-Rotor Contact Force of Brush Seals[J]. 2010, 44(7): 23-27. DOI：

摘要

采用线性悬臂梁和增强的拉格朗日法建立了单根刷丝与转子的接触力模型

同时考虑了刷式密封中刷丝与转子之间的接触力以及在转子横截面内流体对刷丝的均布力

探讨了刷丝的安装角度、刷丝与转子的干涉量、转子横截面内的流体均布力对刷丝与转子之间接触力的影响特性.研究结果表明:在所计算的参数范围内

刷丝的流体均布力对接触力的影响力远大于刷丝的安装角度和刷丝与转子的干涉量的影响力.当刷丝安装角小于35°时

刷丝与转子的接触力随着刷丝安装角的增大而略微减小; 当刷丝安装角大于35°时

受转子横截面内流体对刷丝的均布力的影响

刷丝与转子的接触力随刷丝安装角的增加而增大.

Abstract

The contact between the single bristle and the rotor shaft surface was modeled using the linear cantilever beam model and the augment Lagrange contact theory. The bristle-rotor contact force and flow-induced uniformly distributed bristle load in rotor cross section were considered in the present model. The influence of the bristle lay angle

interference and flow-induced uniformly distributed load in rotor cross section on the bristle-rotor contact force was numerically explored. The results show that the effect of the flow-induced uniformly distributed bristle load in rotor cross section on the rotor-bristle contact force is more significant than that of the bristle lay angle and the interference in the range of the studied parameters. The bristle-rotor contact force has a minimum value when the bristle lay angle equals 35°. In addition

the contact force decreases with the angle when the angle is below 35°. However

when the bristle lay angle varies beyond 35°

the contact force increases with the angle because of the effect of the flow-induced uniformly distributed load on the bristle in the rotor cross section.

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references

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