Abstract
Linear parabolized stability equations (LPSE) considering model curvature are solved with finite difference method. Stationary cross-flow instabilities in boundary layers of an infinite swept-wing are analyzed. LPSE and experimental results are compared. It is shown that at early development of stationary cross-flow disturbances, LPSE simulates flow structure and disturbance profiles well and predicts the N-factors accurately. When disturbances are amplified enough, high order terms can not be omitted and linearization assumption of LPSE is no longer suitable. Moreover, effects of model curvature and boundary layer non-parallelism are investigated. It shows that curvature and non-parallel terms have significant effects on stability analysis of stationary cross-flow instabilities on a swept-wing, and the effects are independent of Reynolds numbers. In the model investigated, inclusion of curvature has a stabilizing effect and non-parallelism shows destabilizing effects on disturbances.
| Original language | English |
|---|---|
| Pages (from-to) | 665-670 |
| Number of pages | 6 |
| Journal | Jisuan Wuli/Chinese Journal of Computational Physics |
| Volume | 27 |
| Issue number | 5 |
| State | Published - Sep 2010 |
Keywords
- Infinite swept wing
- Linear parabolized stability equations
- Stationary cross-flow instabilities