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首页> 外文会议>AIAA/ASME/SAE/ASEE joint propulsion conference exhibit >Simulations of Unsteady Shocks and Detonation Interactions with Structures
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Simulations of Unsteady Shocks and Detonation Interactions with Structures

机译：结构非定常冲击与爆轰相互作用的模拟

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Interaction of moving structures with unsteady shock fronts and detonations in gaseous mixtures is studied. A numerical framework for simulating such problems involving coupling of high speed reactive fluid flow to the motion of structural boundaries or embedded bodies has therefore been developed. Block structured Adaptive Mesh Refinement (AMR) is performed to capture fine scale flow and surface features, while cutcell based immersed boundary method is employed to resolve moving boundaries. Simplified single step chemistry with Arrhenius kinetics is used to model detonation structure. Validation studies are performed for cases with prescribed motion of solid boundaries and when the boundary motion is determined by the surface stresses exerted by the fluid. Results reported for the validation cases demonstrates the robustness and accuracy of the numerical approach. Finally, the developed framework is applied to study detonation initiation due to a moving structure.
机译：研究了气态混合物中具有不稳定冲击波前沿和爆炸的运动结构的相互作用。因此，已经开发出用于模拟这样的问题的数值框架，该问题涉及将高速反应性流体流耦合到结构边界或嵌入体的运动。执行块结构自适应网格细化（AMR）来捕获精细尺度的流动和表面特征，而采用基于cutcell的浸入边界方法来解析移动边界。具有Arrhenius动力学的简化的单步化学用于模拟爆轰结构。对于具有规定边界的固体边界运动的情况以及边界运动由流体施加的表面应力确定的情况，将进行验证研究。报告的验证案例结果证明了数值方法的鲁棒性和准确性。最后，将开发的框架应用于研究由于移动结构而引起的爆炸起爆。

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