新型热流控制的表面冷却用于超音速飞行
Fabian Hufgard1, Christian Duernhofer2, Stefanos Fasoulas2
1High Enthalpy Flow Diagnostics Group (HEFDiG), Institute of Space Systems, University of Stuttgart, Pfaffenwaldring 29, 70569, Stuttgart, Germany. hufgard@irs.uni-stuttgart.de.
Scientific reports
|August 11, 2023
概括
这项研究引入了自适应性透气冷却,根据极端环境的测量热流量实时调整冷却液流量. 这种方法优化了冷却效率,并防止了系统的不稳定.
科学领域:
- 航空航天工程 航空航天工程
- 热管理系统 热管理系统
- 材料科学 材料科学 材料科学
背景情况:
- 透气冷却对于极端高温环境至关重要,例如进入大气层和燃烧室.
- 目前的方法经常使用恒定冷却,这对于不同的热负荷来说是低效和低于最佳的.
- 需要适应性,质量高效的冷却解决方案,以响应实时的热条件.
研究的目的:
- 开发和验证一种用于实时热量流量测定和适应性透气冷却调节的新方法.
- 在极端加热场景中提高冷却性能和效率.
- 为了减轻透气冷却控制系统中不稳定的反循环.
主要方法:
- 使用系统识别过程实时测定表面热量流量.
- 非侵入式的热流量测量取自充气压力.
- 通过校准识别和验证模型参数.
- 在热空气等离子体流环境中进行演示.
主要成果:
- 成功地实时确定了高达1.4 MW/m2的表面热量流.
- 根据测量的热量流量调整透气冷却的适应性调整.
- 证明了控制系统中破坏稳定的正反循环的减弱.
- 在模拟飞行条件下验证该方法的适用性.
结论:
- 通过实时准确测量热流量,所介绍的方法可以实现自适应性透气冷却.
- 这种方法优化了冷却性能,提高了质量效率,并确保了系统的稳定性.
- 该技术经过验证,适用于在极端热环境中的应用,例如航空航天车辆.
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