在高超音速车辆的热保护系统分析中应用气体运动BGK方案
Di Zhou1, Bingchen Du1, Tongqing Guo1
1Key Laboratory of Unsteady Aerodynamics and Flow Control, Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
本研究从数值上研究了高超音速车辆的热保护系统,发现尖峰和对立喷气有效地减少了空气动力学加热. 新的气体运动BGK方案准确地模拟了这些系统.
科学领域:
- 航空航天工程 航空航天工程
- 计算流体动力学的流体动力学.
- 热力学是一种热力学.
背景情况:
- 超音速车辆的开发面临的挑战是严重的空气动力学加热.
- 有效的热保护系统 (TPS) 对车辆的完整性和性能至关重要.
- 传统的计算流体动力学 (CFD) 方法在模拟超音速流量方面存在局限性.
研究的目的:
- 以数值研究不同热保护系统在减少空气动力加热方面的有效性.
- 分析尖峰和对立喷流保护车辆表面的机制.
- 验证一种新的气体动力BGK方案,用于在超音速流中进行TPS分析.
主要方法:
- 一个基于解决博尔兹曼方程的新型气体运动Bhatnagar-Gross-Krook (BGK) 方案.
- 数字流量评估的有限体积框架.
- 模拟高超音速流动场景,使用尖峰和对立喷气热保护系统.
主要成果:
- 发现尖峰和对立的喷气在减少空气动力学加热方面是有效的.
- 分析揭示了与每个TPS相关的特定流动特性和热流分布.
- BGK计划在预测TPS性能方面表现出可靠性和准确性.
结论:
- 气体运动BGK方案是分析高超音速飞行中的热保护系统的可行和准确工具.
- 尖和对立喷气配置为减轻空气动力加热提供了有效的解决方案.
- 进一步的研究可以利用这种方法来进行先进的TPS设计和优化.
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