Scale‐selective dissipation in energy‐conserving finite‐element schemes for two‐dimensional turbulence

Scale‐selective dissipation in energy‐conserving finite‐element schemes for two‐dimensional turbulence
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二维湍流能量守恒有限元方案中的尺度选择性耗散

DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
C. Cotter
C. Cotter
中科院分区:
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文献类型:
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作者:
A. Natale;C. Cotter

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我们分析了二维不可压缩欧拉方程的能量守恒迎风稳定有限元离散的多尺度特性。我们把注意力集中在两个特定的方法:李导数离散引入Natale和Cotter和流线迎风/Petrov-Galerkin(SUPG)离散的涡度平流方程。这种离散化通过模拟不同类型的尺度相互作用来控制涡度拟能。我们量化的方案在再现的非本地的能量后向散射的二维湍流的特征的性能。
We analyze the multiscale properties of energy‐conserving upwind‐stabilized finite‐element discretizations of the two‐dimensional incompressible Euler equations. We focus our attention on two particular methods: the Lie derivative discretization introduced by Natale and Cotter and the Streamline Upwind/Petrov–Galerkin (SUPG) discretization of the vorticity advection equation. Such discretizations provide control on enstrophy by modelling different types of scale interactions. We quantify the performance of the schemes in reproducing the non‐local energy backscatter that characterizes two‐dimensional turbulent flows.
用于数值天气预报的混合有限元
DOI: 10.48550/arxiv.1103.2440
发表时间: 2011
期刊: --
影响因子: --
作者:
Cotter C
通讯作者: Cotter C