Homogeneous Isotropic Turbulence
Homogeneous Isotropic Turbulence
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均匀各向同性湍流
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
D. Tritton
中科院分区：
文献类型：
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作者：
D. Tritton
湍流的许多理论研究都是围绕着均匀、各向同性湍流的概念发展起来的，均匀、各向同性湍流的统计特性不随位置而变化，也没有优先方向。这种运动的近似值可以在风洞中的网格后面得到，如图21.1所示。因此，这些理论得到了观察的补充。然而，我们将把对基于实验的关于湍流结构的观点的考虑推迟到第22章的不同背景中。在这里，没有细节，我们使用的上下文均匀各向同性湍流来说明理解湍流的基本困难之一，并开发一些想法有关的所有湍流。
Many theoretical investigations of turbulence have been developed around the concept of homogeneous, isotropic turbulence — turbulence of which the statistical properties do not vary with position and have no preferred direction. An approximation to such a motion can be obtained behind a grid, such as the one shown in Fig. 21.1, in a wind-tunnel. The theories have thus been supplemented by observation. However, we will postpone consideration of experimentally based ideas about the structure of turbulence to the different contexts of Chapter 22. Here, without detail, we use the context of homogeneous isotropic turbulence to illustrate one of the basic difficulties of understanding turbulence and to develop some ideas relevant to all turbulent flows.