Error-Landscape Assessment of Large-Eddy Simulations: A Review of the Methodology
Error-Landscape Assessment of Large-Eddy Simulations: A Review of the Methodology
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大涡模拟的误差景观评估：方法回顾
DOI：
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发表时间：
2011
影响因子：
2.5
通讯作者：
J. Meyers
中科院分区：
文献类型：
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作者：
J. Meyers
回顾了误差景观方法。该方法通过系统地改变模型和数值参数来计算大涡模拟的误差响应面。使用的误差景观构建的衰减均匀各向同性湍流LES，它表明，LES质量的确定仅基于一个错误的措施，可能会导致误导性的结果，相关的基本错误平衡机制。这个问题可以通过同时考虑一系列误差来避免，强调解决方案中的不同尺度。随后，通过比较Smagorinsky LES的不同数值离散化，进一步说明了误差景观方法。最后，一个更复杂的情况下，即高（无限）雷诺数边界层，被认为是。
A review is presented of the error-landscape methodology. This approach evaluates the error-response surface of large-eddy simulations (LES) to essential model and numerical parameters by a systematic variation of these parameters. Using an error landscape constructed for LES of decaying homogeneous isotropic turbulence, it is shown that the determination of LES quality based on one error measure alone, can lead to misleading results, related to underlying error-balancing mechanisms. This problem can be avoided by considering a range of errors simultaneously, emphasizing different scales in the solution. Subsequently, the error-landscape method is further illustrated by comparing different numerical discretizations for Smagorinsky LES. Finally, a more complex case, i.e. a high (infinite) Reynolds number boundary layer, is considered.