Study on the Influence of Depth-to-Diameter Ratio on the Leakage and Rotordynamic Characteristic of Hole-Pattern Damper Seals

SONG Huiling; WEI Yangguo; LI Yongpeng; ZHANG Zihan; LI Zhigang

doi:10.7652/xjtuxb202507009

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Study on the Influence of Depth-to-Diameter Ratio on the Leakage and Rotordynamic Characteristic of Hole-Pattern Damper Seals

更新时间：2025-07-09

- Study on the Influence of Depth-to-Diameter Ratio on the Leakage and Rotordynamic Characteristic of Hole-Pattern Damper Seals
- Journal of Xi’an Jiaotong University Vol. 59, Issue 7, Pages: 87-98(2025)
- 作者机构：
  
  1.北京天兵科技有限公司， 100076，北京
  2.西安交通大学叶轮机械研究所， 710049，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202507009
  CLC： TK262
- Received：13 January 2025，
  
  Online First：11 March 2025，
  
  Published：10 July 2025
- 稿件说明：
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SONG Huiling, WEI Yangguo, LI Yongpeng, et al. Study on the Influence of Depth-to-Diameter Ratio on the Leakage and Rotordynamic Characteristic of Hole-Pattern Damper Seals[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 87-98.
DOI：

SONG Huiling, WEI Yangguo, LI Yongpeng, et al. Study on the Influence of Depth-to-Diameter Ratio on the Leakage and Rotordynamic Characteristic of Hole-Pattern Damper Seals[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 87-98. DOI： 10.7652/xjtuxb202507009.

摘要

为揭示孔深对孔型阻尼密封封严性能和刚度阻尼动力学性能的影响规律，探究最佳孔深方案，采用非定常多频摄动数值方法，研究了不同孔深下孔型阻尼密封的泄漏特性和动力学特性。首先，通过3种孔深下孔型阻尼密封泄漏量和动力特性系数的数值与试验数据对比，验证了数值方法的准确性；然后，计算分析了3种不同孔径（

为2.0、3.175、5.0 mm）下连续变化孔深（深径比

为0.1~1.25）的孔型阻尼密封的泄漏量；最后，评估了2种进口预旋（

为0、0.5）、5种不同孔深（

为0.5、1.0、1.9、3.3、6.6 mm，

为3.175 mm）下孔型密封的动力特性系数、腔室动态压力及旋流速度发展。数值结果表明：深径比

是影响孔型密封泄漏特性的关键几何参数；从密封封严性能角度来看，

为0.4~0.5是最佳孔深方案，此时不同孔径的密封泄漏量均达到最小值；从密封动力学稳定性角度来看，较小孔深的孔型阻尼密封动力学稳定性更优，在确定最佳孔深时，需考虑污染物沉积、腐蚀磨损对孔深的影响，避免选择过小的孔深（

≥1.0 mm）。

Abstract

To reveal the influence of hold depth on the sealing performance and dynamic characteristics of hole-pattern damper seals

and to explore the optimal hold depth scheme

this paper employs an unsteady multi-frequency perturbation numerical method to investigate the leakage and dynamic characteristics of hole-pattern damper seals at different depths. First

the accuracy of the numerical method is validated by comparing the leakage amounts and dynamic characteristic coefficients of hole-pattern damper seals at three different depths with experimental data. Then

the leakage amounts of hole-pattern damper seals with three different diameters (

=2.0

3.175

5.0 mm) and continuously varying depths (depth-to-diameter ratio

=0.1—1.25) are calculated and analyzed. Finally

the dynamic characteristic coefficients

chamber dynamic pressures

and vortex velocity developments of the seals under two types of inlet pre-rotation (

0.5) and five different depths (

=0.5

1.0

1.9

3.3

6.6 mm

=3.175 mm) are evaluated. Numerical results indicate that the depth-to-diameter ratio

is a key geometric parameter affecting the leakage characteristics of hole-pattern seals. From the perspective of sealing performance

=0.4—0.5 represents the optimal hole depth scheme

at which the leakage amounts for different diameters reach their minimum. In terms of dynamic stability

hole-pattern damper seals with smaller depths exhibit better dynamic stability. When determining the optimal hold depth

it is necessary to consider the impact of contaminant deposition and corrosion wear

avoiding excessively small depths (

≥1.0 mm).

关键词

Keywords

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