EAGER: Application of Calibration Convolution Integrals to Diffusion Transport

拟议的努力将启动一种变革性校准方法的发展，用于在高度恶劣的热环境中估计表面热通量，而不需要地面仪器。这一概念具有实质性的研究价值：a)与高超声速飞行器相关的热防护系统的有效性或了解高超声速燃烧室的热效率；B)由于不利的热事件，在无法到达的表面结构上的传热，例如在燃烧衬里、小室和安全壳壁上的传热；c)由池火或爆炸引起的结构上的传热。提出了一种综合物理、实验、数学和计算原理的方法。由此产生的解析公式隐含地具有完整的传感器表征，探针定位，主体材料热物理性质，扩散物理和数学常数需要稳定和准确的表面热通量预测。新的标定方法得到第一类Volterra积分方程；并且，因此，该试样可以被解释为准备用于实际实施的换能器。现实世界的实现需要进一步的分析和计算研究。该提案的智力价值集中在涉及高温环境的新材料开发的关键应用上。响应最先进的最准确的估计表面热通量和温度的方法，包括传感器特性，仍然需要解决许多涉及高度恶劣环境的应用。研究工作将影响航空航天，能源，火灾，燃烧，地球物理，国防和国家安全的研究和发展，及时和响应的方式。

CBET-1153476PI: FrankelThe proposed effort will initiate the development of a transformative calibration method for estimating surface heat flux in highly hostile thermal environments without requiring surface instrumentation. This concept has substantive merit for investigating: a) the effectiveness of thermal protection systems associated hypersonic flight vehicles or for understanding thermal efficiencies in hypersonic combustors; b) heat transfer on unreachable surface structures such as found in combustion liners, small chambers, and containment walls as a result of a hostile thermal event; and, c) heat transfer on structures emanating from pool fires or explosions. A comprehensive method is proposed that integrates physical, experimental, mathematical and computational principles. The resulting analytic formulation implicitly possesses full-sensor characterization, probe positioning, host material thermophysical properties, diffusion physics, and mathematical constants required for stable and accurate surface heat flux predictions. The new calibration method leads to a Volterra integral equation of the first kind; and, thus the coupon or specimen can be interpreted as a transducer ready for practical implementation. Further analytical and computational study is required for real-world implementation. The intellectual merit of the proposal centers about critical applications for new material development involving high temperature environments. Responsive state-of-the-art accurate methods for estimating surface heat flux and temperature that includes sensor characterization still requires resolution for many applications involving highly hostile environments. The research effort will impact aerospace, energy, fire, combustion, geophysical, defense and national security research and developments in a timely and responsive manner.