一种有效模拟反应流的混合自适应多分辨率方法
A hybrid adaptive multiresolution approach for the efficient simulation of reactive flows
摘要：
计算研究，使用块结构的自适应网格细化（AMR）的方法遭受不必要的高网格分辨率的区域相邻的重要解决方案的功能。这个缺陷限制了AMR码的性能。在这项工作中，一种新的混合自适应多分辨率（HAMR）方法AMR为基础的计算，以解决这个问题。多分辨率（MR）平滑度指标用于识别网格上的平滑区域，其中通过用插值代替直接计算可以降低单个物理求解器的计算成本。我们提出了一种方法来平衡由于自适应离散化和物理量插值的误差，使HAMR解决方案的整体精度与MR驱动的AMR解决方案是一致的。HAMR计划的性能进行评估的范围内的测试问题，从纯流体力学湍流燃烧。
英文摘要：
Computational studies that use block-structured adaptive mesh refinement (AMR) approaches suffer from unnecessarily high mesh resolution in regions adjacent to important solution features. This deficiency limits the performance of AMR codes. In this work a novel hybrid adaptive multiresolution (HAMR) approach to AMR-based calculations is introduced to address this issue. The multiresolution (MR) smoothness indicators are used to identify regions of smoothness on the mesh where the computational cost of individual physics solvers may be decreased by replacing direct calculations with interpolation. We suggest an approach to balance the errors due to the adaptive discretization and the interpolation of physics quantities such that the overall accuracy of the HAMR solution is consistent with that of the MR-driven AMR solution. The performance of the HAMR scheme is evaluated for a range of test problems, from pure hydrodynamics to turbulent combustion.
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