控制高超音速边界层过渡的局部冷却和地表处理
1School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK, 74078, USA.
Scientific reports
|July 10, 2024
概括
一种结合局部冷却和地表处理的新方法有效控制了超音速边界层过渡. 这种方法显著减少了流动干扰,在各种飞行条件下证明有效.
科学领域:
- 航空航天工程 航空航天工程
- 流体动力学 流体动力学
- 超音速技术是一种高超音速技术.
背景情况:
- 超音速边界层过渡对于车辆空气动力学和热管理至关重要.
- 控制这种过渡对于提高高速飞行中的性能和安全至关重要.
研究的目的:
- 研究一种用于控制高超音速边界层过渡的新方法.
- 评估局部冷却和局部金属表面处理的有效性.
主要方法:
- 使用了直接的数值模拟和线性稳定性理论.
- 分析是在马赫6.0的凸上进行的.
- 模拟了四个病例:基基线,局部冷却,局部超表面和联合治疗.
主要成果:
- 结合局部冷却与局部地表处理,显著降低了墙壁压力和密度扰动幅度.
- 与基线情况相比,干扰幅度减少了270倍.
- 该方法的性能显示微不足道的依赖于雷诺兹数的变化.
结论:
- 结合局部冷却和局部地表处理是控制高超音速边界层过渡的高效策略.
- 拟议的方法证明了在广泛的飞行条件下具有稳定性和适用性.
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