سال انتشار: ۱۳۸۶

محل انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک

تعداد صفحات: ۷

نویسنده(ها):

Shahverdi – Assistant professor, Islamic Azad University, Science and Research Branch, Engineering Faculty Department, Tehran, Iran
Nobari – Associate Professor, Amirkabir University of Technology, Department of Aerospace Engineering Tehran, Iran
Haddadpour – Assistant Professor, Sahrif University of Technology, Department of Aerospace Engineering Tehran, Iran
Behbahani-Nejad – Assistant Professor, Shahid Chamran University of Ahvaz , Mechanical Engineering Department Ahvaz, Iran

چکیده:

A novel analytical formulation for aeroelastic analyses using a proposed accelerated efficient reduced-order aerodynamic modeling approach (PROM) based on theoundary element method is developed. In this approach the eigenvalue problem of the unsteady flows is defined based on the unknown wake singularities. By constructing this reduced-order model, the body quasi-static eigenmodes are removed from the eigensystem and it is possible to obtain satisfactory results without using the static correction technique when enough eigenmodes are used. For illustration
purposes, numerical examples are presented that demonstrate the accuracy and efficiency superiority of the present method over conventionalreduced order modeling (CROM). Also, The incorporation of thisaerodynamic model into aeroelastic flutter model are shown. Stability results are presented for critical and non-critical velocities.