一种新型颤振激励系统的特性研究  

An Investigation in the Characteristics of a New Flutter Exciter System

作　　者：王涛[1] 史爱明[1] 杨永年[1] 

机构地区：[1]西北工业大学翼型叶栅空气动力学国防科技重点实验室,陕西西安710072

出　　处：《飞行力学》2005年第1期35-37,共3页Flight Dynamics

摘　　要：在非结构网格的基础上,以欧拉方程为流场的主控方程,采用格心格式空间离散的有限体积法和四步Runge-Kutta显式时间推进的方法,对一种新型颤振激励系统的流场进行了数值研究。研究了该系统的工作原理和激励力特性。研究结果表明,该系统能很好地激励飞机结构。Flutter exciter system is one of important equipment for flight flutter test. In this paper, the exciting characteristics of a new flutter exciter system is investigated. Explicit temporal derivatives and cell-center finite volume method spatial derivatives are adopted to simulate 2-D flow fields of the system on the basis of unstructured mesh. An explicit four-stage Runge-Kutta method is used marching pseudo time and at the same time, the local pseudo-time stepping, and implicit residual smoothing are used to accelerate convergence, analyzing the characteristics of the exciting force. The research results prove the system can excite the structure of aircraft satisfactorily.

关 键 词：颤振激励系统 飞行颤振试验 非结构网格 欧拉方程 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]