Flow and Leakage Characteristics in Sealing Chamber of a Variable Geometry Hypersonic Inlet

作     者：XIA Feng SUN Bo YU Jianyi YUE Lianjie GAO Yu DAI Chunliang 夏枫;孙波;于建一;岳连捷;高钰;代春良

作者机构：College of Mechanical EngineeringNanjing University of Science and TechnologyNanjing 210094P.R.China Beijing System Design Institute of Electro-mechanic EngineeringBeijing 100190P.R.China State Key Laboratory of High-Temperature Gas DynamicsBeijing 100190P.R.China 

基　　金：supported by the Opening Foundation of National State Key Laboratory of High Temperature Gas Dynamics(No.2021KF07) 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2022年第39卷第6期

页      码：663-671页

摘      要：When the variable geometry hypersonic inlet is sealed with ceramic wafers,the cavity flows inside the sealing chamber can be affected by the boundary layer near the side *** study the influence of the boundary layer thickness near the side wall on the flow and leakage characteristics in sealing chamber,the numerical calculation of the cavity flow in the sealing chamber under different inflow boundary layer thicknesses is carried *** results show that three-dimensional cavity flow structures are close to being asymmetric,and the entrance pressure of the leakage path can also be affected by asymmetry;with the increase of the thickness of the boundary layer,the pressure at the cavity floor and the seal entrance ***,the existing leakage prediction model is modified according to the distribution rule of the cavity floor and the flow properties in the leakage path.

主 题 词：variable geometry inlet ceramic wafer seal vortex structure leakage rate asymmetry three-dimensional cavity flow 

学科分类：080103[080103] 08[工学] 080104[080104] 0801[工学-力学类] 

核心收录：

D　O　I：10.16356/j.1005-1120.2022.06.003

馆 藏 号：203117892...