EAGER: Experimental Verification of a Transformative Calibration Method

1137625 Frankel正在开发一种新的校准方法，该方法在高度恶劣的热环境中产生准确的表面热通量预测，而无需表面仪器。这一概念在以下几个方面具有实质性的研究价值：（a）与高超音速飞行器有关的热防护系统的有效性，或理解高超音速燃烧室的热效率;（B）由于不利的热事件而在不可到达的表面结构上的热传递，如在燃烧衬套、小燃烧室和安全壳壁中发现的;（c）由于池火或爆炸而在结构上产生的热传递。 提出了一种综合的方法，它集成了物理，实验，数学和计算原理。 由此产生的配方隐含具有完整的传感器表征，探头定位，主机材料的热物理性质，扩散物理，和稳定和准确的表面热通量预测所需的数学常数。该方法的第二个新特点在于通过多次校准实验获得稳定参数。所提出的方法适用于一维、二维和三维几何形状，包括在一个或多个区域配置中的各向同性或正交各向异性材料。实验室校准将使用光纤、二极管激光系统进行。新的校准方法导致的沃尔泰拉积分方程的第一类，因此，试样或标本可以被解释为一个传感器准备实际实施。智力优势：多管齐下的战略将分析、计算、传感器开发、仪器和实验方法编织在整个解决方案过程中，并以响应、积极和及时的方式解决关键的美国应用。预计新材料的开发将继续以令人印象深刻的速度进行。用于估计表面热通量和温度（包括传感器表征）的响应式最先进的精确方法仍然需要解决涉及高度恶劣环境的许多应用。应注意的是，逆热传导的新校准视图可能会影响涉及逆估计的其他领域。更广泛的影响：拟议研究的成功将影响航空航天，能源，火灾，燃烧，地球物理，国防和国家安全的研究和发展该研究的多方面性质，通过提供解决问题的综合观点，增强了我们的本科生和研究生的研究经验。研究结果将纳入本科和研究生课程。短期课程的开发将在大学、会议和国家实验室进行。我们提出了一个积极的推广计划，激励HS学生强烈考虑工程作为一个职业生涯通过第一手的，非常令人兴奋的实验室经验。

1137625FrankelA novel calibration method is under development that produces accurate surface heat flux predictions 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 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. A second novel feature of the approach lies in the acquisition of the stabilizing parameters though multiple calibration experiments. The proposed methodology is applicable to one-, two-, and three-dimensional geometries involving either isotropic or orthotropic materials in one or multi-region configurations.Laboratory calibration will be performed using a fiber-optic, diode laser system. 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. Intellectual Merit: The multipronged strategy weaves analysis, computations, sensor development, instrumentation and experimental methods throughout the complete solution process and addresses critical US applications in a responsive, aggressive and timely manner. New material development is expected to continue at an impressive rate. Responsive state-of-the-art accurate methods for estimating surface heat flux and temperature that includes sensor characterization still requires resolution for many application involving highly hostile environments. It should be noted that the novel calibration view to inverse heat conduction could impact other areas involving inverse estimation.Broader Impact: Success of the proposed research will impact aerospace, energy, fire, combustion, geophysical, defense and national security research and developments The multifaceted nature of the study enhances the research experience of our undergraduate and graduate students by providing an integrated view to problem solving. The research findings will be incorporated into undergraduate and graduate courses. Short course development will be pursued for presentation at universities; conferences; and, national laboratories. We propose an aggressive outreach plan for motivating HS students to strongly consider engineering as a career through a first-hand, and highly exciting laboratory experience.