Control of Transonic Shock Wave Oscillation over a Supercritical Airfoil

• 作者: Abul Bashar Mohammad Toufique Hasan Heuy Dong Kim Mohammad Itmam Labib Mohammad Saddam Hossain Joy Muhammad Rizwanur Rahman Toshiaki Setoguchi
• 来源期刊: 流体动力学(英文)
• 学科: 物理学
• 关键词: TRANSONIC Flow Shock OSCILLATION PASSIVE CONTROL AIRFOIL
• 年，卷（期）: 2015,（4）
• 页码范围: 302-310
• 页数: 9页
• 分类号: O3

摘要

In the present study, a numerical investigation is carried out on the aerodynamic performance of a supercritical airfoil RAE 2822. Transonic flow fields are considered where self-excited shock wave oscillation prevails. To control the shock oscillation, a passive technique in the form of an open rectangular cavity is introduced on the upper surface of the airfoil where the shock wave oscillates. Reynolds Averaged Navier-Stokes (RANS) equations have been used to predict the aerodynamic behavior of the baseline airfoil and airfoil with cavity at Mach number of 0.729 and at angle of attack of 5°. The aerodynamic characteristics of the baseline airfoil are well validated with the available experimental data. It is observed that the introduction of a cavity around the airfoil upper surface can completely stop the self-excited shock wave oscillation and successively improve the aerodynamic characteristics.