Abstract
The flutter characteristics of a airfoil with two degree of freedom was studied, in which the structural parameters were considered as linear. The N-S equations as governing equations were used to calculate the nonlinear unsteady aerodynamics at transonic speed. The flutter motion equations in combination with N-S equations were solved by time advancing method to calculate the structured response. An implicit lower-upper-factorized algorithm in a body-fitted coordinate system was constructed, in which a simple upwind scheme was adopted. Simulation results for NACA64A006 airfoil show that variation of flutter critical velocity with Mach number is given and the nonlinear nature of flutter phenomenon appears clearly.
| Original language | English |
|---|---|
| Pages (from-to) | 341-344 |
| Number of pages | 4 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 19 |
| Issue number | 3 |
| State | Published - Aug 2001 |
Keywords
- Flutter
- N-S (Navier-Stokes) equations
- Unsteady transonic flow