Pulsation Response of Two Dimensional Wing to Atmosphere Turbulence in Supersonic Flow
ZHENG Guo-yong1, YANG Yi-ren2
1. School of Civil Engineering and Architecture. Central South University, Changsha 4100752. Dept. of Appl. Mechanics and Eng., Southwest Jiaotong University, Chengdu 610031
Abstract：The dynamic response of two-dimensional wing to atmosphere turbulence is investigated. The aerodynamic force is resolved into two parts, free vibrating aerodynamic force and fluctuating aerodynamic force. The fluctuating pressure can be obtained by using trigonometric series composition method of random field. The root of mean square of response of system is calculated with the random theory. It is the focal point to analyze the influences of the mean velocity, the strength of turbulence and the integral measure of turbulence on the root of mean square of structure response. The results show that the root of mean square of response slowly and linearly increases when the flow velocity is low the flutter critical speed. But, when the flow velocity is over the flutter critical speed, the root of mean square of response prominently and linearly increases with the increasing of the flow velocity. However, the root of mean square of response is insensitive to the change of the integral measure of turbulence.
2009, Vol. 28 
