论文标题
强迫维度在薄层湍流能量级联中的作用
Role of the forcing dimensionality in thin-layer turbulent energy cascades
论文作者
论文摘要
我们研究了在薄层中湍流中的向前级别级联反向级联的过渡，从而改变了强迫的功能形式和层的厚度。我们表明，随着强迫函数变得更加三维，反向级联反向抑制，并且过渡发生的临界高度HC被降低。我们研究了该临界高度对参数r的依赖性，该参数r测量强迫的维度，从而在参数空间R-H中构造一个相空间图。我们讨论雷诺数和域大小的效果。
We investigate the transition from forward to inverse energy cascade in turbulent flows in thin layers, varying the functional form of the forcing and the thickness of the layer. We show that, as the forcing function becomes more three-dimensional, the inverse cascade is suppressed and the critical height hc, where the transition occurs, is decreased. We study the dependence of this critical height on a parameter r which measures the dimensionality of the forcing and thus construct a phase space diagram in the parameter space r-h. We discuss the effect of Reynolds number and domain size.
