A Posteriori Study on Modelling and Numerical Error in LES Applying the Smagorinsky Model
A Posteriori Study on Modelling and Numerical Error in LES Applying the Smagorinsky Model
复制标题
应用Smagorinsky模型的LES建模和数值误差的后验研究
DOI：
10.1007/978-3-540-34234-2_13
复制
发表时间：
2007
期刊：
影响因子：
2.5
通讯作者：
T. Brandt
中科院分区：
文献类型：
--
作者：
T. Brandt
本文研究了在平面Poiffille湍流流动中，应用标准Smagorinsky模型和二阶格式进行大涡模拟（LES）时的数值误差和模型误差，并进行了后验比较。当网格细化时，保持模型系数和长度尺度的乘积不变，接近LES方程的网格无关解。目的是通过两个误差分量来阐明模型参数的选择，并研究通过模型的内置滤波器来控制数值误差的可能性。
AbstractIn this paper, numerical and modelling errors in large eddy simulation (LES) applying the standard Smagorinsky model and a second-order scheme are studied and compared a posteriori in a turbulent plane Poiseuille flow. The gridindependent solution of the LES equations is approached keeping the product of the model coefficient and the length scale constant as the grid is refined. The aim is to clarify the choice of the model parameters via the two error components, and to study the possibility to control the numerical error via the built-in filter of the model.