Density-PDFs and Lagrangian Statistics of highly compressible Turbulence
Fluid Dynamics
2009-11-13 v1
Abstract
We report on probability-density-functions (PDF) of the mass density in numerical simulations of highly compressible hydrodynamic flows and the corresponding structure formation of Lagrangian particles advected by the flows. Numerical simulations were performed with collocation points and 2 million tracer particles integrated over several dynamical times. We propose a connection between the PDF of the Lagrangian tracer particles and the predicted log-normal distribution of the density fluctuations in isothermal systems.
Keywords
Cite
@article{arxiv.0707.1798,
title = {Density-PDFs and Lagrangian Statistics of highly compressible Turbulence},
author = {Christoph Beetz and Christian Schwarz and Jürgen Dreher and Rainer Grauer},
journal= {arXiv preprint arXiv:0707.1798},
year = {2009}
}