机械科学与技术2012，Vol.31Issue(8)：1241-1246,6.
航空发动机轴承腔气相速度场数值模拟
Numerically Simulating Airflow Field Inside Aeroengine Bearing Chamber
摘要
Abstract
The airflow field in a typical aeroengine beating chamber has been calculated with the commercial computational fluid dynamics software CFX 11. 0, taking into consideration the sealing structure of the ventilation hole and the airflow state equations. Then the effects of erating conditions such as rotational speed, air inflow volume, gap of the bearing chamber, the the structural parameters and ophydraulic diameter of the bearing chamber on the air- flow states are analyzed. The calculation results show preliminarily but clearly that the air inflow, ventilation hole and compressible air property have significant influence on the airflow states of the bearing chamber. The nondi- mensional tangential velocity decreases along the radial direction of the bearing chamber, but the radial and axial velocities change in a complicated manner. The rotational speed of the rotor, airflow volume and the hydraulic diameter of the bearing chamber have great influence on the nondimensional velocity distribution.关键词
航空发动机/轴承腔/气相流场/数值模拟/流动速度Key words
aeroengine/bearing chamber/airflow field/numerical simulation/airflow velocity分类
航空航天引用本文复制引用
陈薄,陈国定,张永红,孙恒超..航空发动机轴承腔气相速度场数值模拟[J].机械科学与技术,2012,31(8):1241-1246,6.基金项目
基金项目：国家自然科学基金项目（50975233）和航空科学基金项目（20100453004）资助 （）
