基于正交试验法的刷式封严泄漏特性数值研究

推进技术 ›› 2018, Vol. 39 ›› Issue (3): 630-637.

基于正交试验法的刷式封严泄漏特性数值研究

刘志¹,吉洪湖¹,胡娅萍¹,杜春华¹,力宁²,周坤²

南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016,南京航空航天大学能源与动力学院，江苏南京 210016,中国航发湖南动力机械研究所，湖南株洲 412002,中国航发湖南动力机械研究所，湖南株洲 412002

发布日期:2021-08-15
作者简介:刘志，男，硕士生，研究领域为封严技术研究。

Numerical Simulation on Leakage Characteristics of Brush Seal on Orthogonal Test Method

College of Energy and Power Engineer，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power Engineer，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power Engineer，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power Engineer，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,AECC Hunan Aviation Powerplant Research Institute，Zhuzhou 412002，China and AECC Hunan Aviation Powerplant Research Institute，Zhuzhou 412002，China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究刷式封严的泄漏特性，针对刷环外径[Do]，刷环内径[Di]，刷丝直径d，刷丝排列角度β，刷束厚度B，后挡板保护高度[HF]以及上下游压差[Δp]，环境温度T和转子转速N等9个影响刷式封严泄漏特性的主要参数，依据正交试验原理设计了32个封严结构模型，对零间隙配合时各参数对泄漏特性的影响进行了数值研究。研究结果表明:在给定的参数范围内，上述参数对刷式封严泄漏量的影响程度有明显区别，其影响程度由主到次的顺序为:[Δp→Di→Do→B→d→HF→β→T→N]。根据以上正交试验结果可以推断泄漏量最小的刷式封严结构，并用数值计算证明了其泄漏量最小。

关键词: 刷式封严；泄漏特性；几何参数；气动参数；正交试验

Abstract: Numerical simulation was carried out with 32 models that are designed according to the principle of orthogonal test to study the effects of the main parameters including outer diameter[Do]， inner diameter[Di]， bristle diameter d， bristle lay angle β， bristle back width B， fence height[HF]and pressure drop[Δp]， rotor speed N， temperature T on leakage characteristics of brush seals， when the clearance between the brush and rotor is zero. The results show that there are obvious differences between the parameters about the influence on leakage within the scope of the parameters. In all of the parameters， the rank of importance on leakage characteristics is[Δp→Di→Do→B→][d→HF→β→T→N]. The geometry for the least leakage can be inferred based on the above test， and it is minimum leakage by numerical simulation.

Key words: Brush seals；Leakage characteristics；Geometry parameters；Aerodynamic parameters；Orthogonal test

刘志,吉洪湖,胡娅萍,杜春华,力宁,周坤. 基于正交试验法的刷式封严泄漏特性数值研究[J]. 推进技术, 2018, 39(3): 630-637.

LIU Zhi¹,JI Hong-hu¹,HU Ya-ping¹,DU Chun-hua¹,LI Ning²,ZHOU Kun². Numerical Simulation on Leakage Characteristics of Brush Seal on Orthogonal Test Method[J]. Journal of Propulsion Technology, 2018, 39(3): 630-637.

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