论文标题
有效模拟反应流的杂种自适应多解析方法
A hybrid adaptive multiresolution approach for the efficient simulation of reactive flows
论文作者
论文摘要
使用嵌段结构的自适应网格改进（AMR）方法的计算研究在与重要解决方案特征附近的区域中具有不必要的高网格分辨率。这种缺陷限制了AMR码的性能。在这项工作中，引入了一种基于AMR的计算的新型混合自适应多分辨率（HAMR）方法来解决此问题。多分辨率（MR）平滑度指标用于识别网格上平滑度的区域，其中通过用插值替换直接计算，可以降低单个物理求解器的计算成本。我们建议一种方法来平衡由于自适应离散化和物理量插值而导致的错误，以使HAMR解决方案的总体准确性与MR-drive AMR溶液的总体准确性一致。从纯流体动力学到湍流燃烧，评估了HAMR方案的性能。
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.
