Stochastic algorithm for generation of a divergence-free anisotropic homogeneous turbulent velocity fluctuation field

Stochastic Lagrangian models of velocity in homogeneous turbulent shear flow

Stochastic Lagrangian models for the velocity following a fluid particle are used both in studies of turbulent dispersion and in probability density function ~PDF! modeling of turbulent flows. A general linear model is examined for the important case of homogeneous turbulent shear flow, for which there are recent direct numerical simulation ~DNS! data on Lagrangian statistics. The model is defi...

Anisotropic velocity correlation spectrum at small scales in a homogeneous turbulent shear flow.

A simple theoretical analysis and direct numerical simulations on 512(3) grid points suggest that the velocity correlation spectrum tensor in the inertial subrange of homogeneous turbulent shear flow at high Reynolds number is given by a simple form that is an anisotropic function of the wave vector. The tensor is determined by the rate of the strain tensor of the mean flow, the rate of energy ...

Divergence-Free Wavelet Analysis of Turbulent Flows

In this paper we study the application of divergence-free wavelet bases for the analysis of incompressible turbulent flows and perform several experiments. In particular, we analyze various nominally incompressible fields and study the influence of compressible perturbations due to experimental and computational errors. In addition, we investigate the multiscale structure of modes obtained from...

A New Algorithm for Performance Evaluation of Homogeneous Architectural Styles

Software architecture is considered one of the most important indices of software engineering today. Software Architecture is a technical description of a system indicating its component structures and their relationships, and is the principles and rules governing designing. The success of the software depends on whether the system can satisfy the quality attributes. One of the most critical as...

Quantifying scaling in the velocity field of the anisotropic turbulent solar wind