A diffuse interface method for solid-phase modeling of regression behavior in solid composite propellants
A diffuse interface method for solid-phase modeling of regression behavior in solid composite propellants
复制标题
固体复合推进剂回归行为固相建模的扩散界面方法
DOI：
10.1016/j.combustflame.2022.112219
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发表时间：
2022
影响因子：
4.4
通讯作者：
Runnels, Brandon
中科院分区：
文献类型：
--
作者：
Kanagarajan, Baburaj;Quinlan, John M.;Runnels, Brandon
固体复合推进剂在推进领域中普遍存在。为了设计和控制固体火箭发动机，了解和准确预测SCP回归是至关重要的。烧伤表面的退变是一个复杂的过程，由热-化学-机械相互作用引起，通常表现出极端的形态变化和拓扑转变。扩散界面方法，如相场（PF），非常适合于这种类型的建模过程，并提供了一些明显的数值优势，他们的尖锐界面对应。它们还提供了一个方便的框架，将多个多物理动力学。在这项工作中，我们提出了一个相场方法建模回归的SCP与不同的物种和几何形状。我们从热力学的角度构建模型，离开基本配方一般。一个扩散物种的界面场被用作捕获复杂的燃烧化学在一个降阶的方式，使之有可能从固相模型回归的机制。计算实现，它使用块结构的自适应网格细化和时间substepping提高性能，简要讨论。该模型被应用到四个测试用例：（i）纯AP单组元推进剂，（ii）AP PBAN三明治，（iii）AP HTPB三明治，和（iv）球形AP颗粒填充在HTPB矩阵中的二维和三维。在所有情况下，即使在预测性地应用模型时（即，没有参数调整），如在（iv）的情况下。所提出的PF模型的验证表明其有效性作为未来SCP调查的数值设计工具。
Solid composite propellants (SCPs) are ubiquitous in the field of propulsion. In order to design and control solid rocket motors, it is critical to understand and accurately predict SCP regression. Regression of the burn surface is a complex process resulting from thermo-chemical-mechanical interactions, often exhibiting extreme morphological changes and topological transitions. Diffuse interface methods, such as phase field (PF), are well-suited for modeling processes of this type, and offer some distinct numerical advantages over their sharp-interface counterparts. They also provide a convenient framework for incorporating multiple multiphysical dynamics. In this work, we present a phase-field method for modeling the regression of SCPs with varying species and geometry. We construct the model from a thermodynamic perspective, leaving the base formulation general. A diffuse-species-interface field is employed as a mechanism for capturing complex burn chemistry in a reduced-order fashion, making it possible to model regression from the solid phase only. The computational implementation, which uses block-structured adaptive mesh refinement and temporal substepping for increased performance, is briefly discussed. The model is then applied to four test cases: (i) pure AP monopropellant, (ii) AP PBAN sandwich, (iii) AP HTPB sandwich, and (iv) spherical AP particles packed in HTPB matrix in two and three dimensions. In all cases, reasonable quantitative agreement is observed, even when the model is applied predictively (i.e., no parameter adjustment), as in the case of (iv). The validation of the proposed PF model demonstrates its efficacy as a numerical design tool for future SCP investigation.
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DOI：
10.1109/icmae.2016.7549532
发表时间：
2016
期刊：
2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE)
影响因子：
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作者：
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影响因子：
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