摘要
导流叶栅几何及气动参数的选取直接关系到叶栅式反推力装置的性能,本文选取冲击式对称叶栅进行数值模拟,采用混合网格生成技术,研究叶栅稠密度、叶片进口气流角和出口气流角对轴向反推力系数和流量系数的影响。计算结果表明,叶栅稠密度在一定范围内变大时,流量系数减小,轴向反推力系数增加;在反推气流不被进气道吸入的情况下,当气流角增大,流量系数变大,轴向反推力系数降低。双曲非等厚叶片的气动性能要好于单曲等厚叶片。
The aerodynamic performance of a cascade thrust reverser is affected by configuration and parameter of cascade,so this paper used symmetrically shaped cascade blades,with the technology of hybrid grid system,and studied the influence of solidity and flow angle of inlet and outlet on the axial reverser thrust coefficient and mass flow coefficient.The final computation results show：the axial reverser thrust coefficient increases as solidity increases in a certain extent,but the mass flow coefficient decreases;when reingestion don＇ t occur,the mass flow coefficient increases as flow angle increases,but the axial reverser thrust coefficient decreases.The double-curvature blades are better than the single-curvature blades in aerodynamic performance.
出处
《飞机设计》
2010年第2期51-56,共6页
Aircraft Design
关键词
叶栅式反推力装置
稠密度
进出口气流角
轴向反推力系数
流量系数
cascade thrust reverser
solidity
flow angle of inlet and outlet
axial reverser thrust coefficient
mass flow coefficient
作者简介
张国栋（1983-），男，内蒙古人，硕士生，主要从事飞机内流气动热力学研究。
王强（1964-），男，博士生导师，主要从事航空发动机内流气动热力学及红外隐身技术研究。
