Diffuse interface method for solid composite propellant ignition and regression
Diffuse interface method for solid composite propellant ignition and regression
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固体复合推进剂点火与回归的扩散界面法
DOI：
10.1016/j.combustflame.2023.113120
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发表时间：
2024
影响因子：
4.4
通讯作者：
Runnels, Brandon
中科院分区：
文献类型：
--
作者：
Meier, Maycon;Schmidt, Emma;Martinez, Patrick;Quinlan, J. Matt;Runnels, Brandon
固体复合推进剂（SCP）因其化学和机械稳定性好、生产和操作工艺简单等优点而广泛应用于推进领域。计算建模可以降低成本、提高效率，并在SCP设计过程中覆盖更大的配置空间。然而，准确和有效的SCP建模提出了一些数值挑战。在这些系统建模的主要障碍是捕捉复杂的不断发展的接口。最近，它已被证明，相场方法具有很强的能力来模拟的SCP的燃烧行为，隐式捕捉的拓扑演变在一个相对较低的计算成本。初始相场方法在其进行预测回归建模的能力方面显示出希望，但需要一些近似和启发式建模方法。这项工作提出了相场回归模型的新公式，该模型将热求解器与阿伦尼乌斯速率定律相结合，使用全面的基于物理的方法对界面回归进行建模。这提高了以前的方法的能力，通过增加的数量占运动力，并允许在系统中的热扩散率的研究。它还能够实现完全耦合的固体-流体界面的集成。为了证明该模型的有效性，它被应用和校准到一个均匀的单组元推进剂（高氯酸铵）。该模型在一定温度范围内进行了验证，并与实验数据进行了合理的定量匹配。该模型不需要进行拟合就能恢复点火时间与热流密度之间的关系。总的来说，该方法表现出很大的能力，再现实验数据匹配的温度，燃烧速率，和热扩散率profiles. Statement的显着性A新的扩散界面法计算点火和回归率在SCP开发。虽然这是建立在以前的工作中的扩散界面建模的SCP，它是新颖的，在其耦合到热传输，以及它的发展（和耦合）的近似气相热通量。该模型重现实验回归率数据具有合理的精度。此外，它定量捕获点火行为，无需对模型进行额外修改。该模型是在一个高性能的计算框架，能够解决大型，三维mesostuctures。
Solid Composite Propellants (SCPs) are extensively used in the field of propulsion for their chemical and mechanical stability in long-term storage, and for having simple production and operation processes. Computational modeling enables cost reduction, increased efficiency, and greater coverage of the configuration space in the SCP design process. However, accurate and efficient SCP modeling presents a number of numerical challenges. A primary obstacle in modeling these systems is capturing the complex evolving interface. Recently, it has been shown that the phase-field method has a strong ability to model the combustion behavior of SCPs, implicitly capturing the topological evolution at a relatively low computational cost. Initial phase-field methods show promise in their ability to do predictive regression modeling but require a number of approximations and heuristic modeling methods. This work presents a new formulation for the phase field regression model that combines a thermal solver with an Arrhenius rate law to model interface regression using a comprehensive and physics-based approach. This improves the capability of previous methods by increasing the number of kinematic forces that are accounted for, and allowing the study of thermal diffusivity in the system. It also enables the integration of a fully coupled solid-fluid interface. To demonstrate the efficacy of the model, it is applied and calibrated to a homogeneous monopropellant (ammonium perchlorate). The model is validated for a range of temperatures, with a reasonable quantitative match to experimental data. It was also demonstrated that the model recovered the relationship between ignition time and heat flux, with no fitting required. Overall, the method showed great capability of reproducing experimental data by matching temperature, burn rate, and thermal diffusivity profiles.Statement of SignificanceA new diffuse interface method is developed for calculating ignition and regression rates in SCPs. While this builds on previous work in diffuse interface modeling of SCPs, it is novel in its coupling to thermal transport, as well as its development of (and coupling to) a approximation for gas phase heat flux. The model is shown to reproduce experimental regression rate data with reasonable accuracy. Moreover, it quantitatively captures ignition behavior with no additional modifications to the model. The model is implemented in a high performance computational framework that is able to resolve large, three-dimensional mesostuctures.
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