MODELLING HYPERSONIC FLOWS IN THERMOCHEMICAL NONEQUILIBRIUM USING ADAPTIVE MESH REFINEMENT
MODELLING HYPERSONIC FLOWS IN THERMOCHEMICAL NONEQUILIBRIUM USING ADAPTIVE MESH REFINEMENT
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发表时间：
2018
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通讯作者：
C. Atkins;R. Deiterding
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作者：
C. Atkins;R. Deiterding
流场的足够分辨率对于确保模拟在空间上充分收敛是至关重要的。然而，过于精细的网格会导致过多的计算时间。自适应网格细化（AMR）算法能够通过仅在需要的地方增加分辨率来平衡这两个约束。在这项工作中，一个块结构自适应网格细化（SAMR）求解器已经耦合到突变++热化学库中，以实现热化学非平衡流动的高分辨率模拟。该求解器已使用制造解的方法进行了验证，并给出了高超声速流动的计算，展示了热化学模型和AMR算法求解流动特征的能力。
Adequate resolution of the flow field is vital to ensure that simulations are sufficiently spatially converged. However, a too finely resolved mesh can lead to excessive computational times. Adaptive Mesh Refinement (AMR) algorithms are able to balance these two constraints by increasing the resolution only where it is needed. In this work, a block-Structured Adaptive Mesh Refinement (SAMR) solver has been coupled to the Mutation++ thermochemical library to enable high resolution simulations of flows in thermochemical nonequilibrium. The solver has been verified using the Method of Manufactured Solutions and computations of hypersonic flows are presented, demonstrating the thermochemical model and the ability of AMR algorithms to resolve flow features.