Intermittency and Universality in Fully-Developed Inviscid and Weakly-Compressible Turbulent Flows

Details Intermittency and Universality in Fully-Developed Inviscid and Weakly-Compressible Turbulent Flows Intermittency and Universality in Fully-Developed Inviscid and Weakly-Compressible Turbulent Flows

2007-09-19

arxiv.org/abs/0709.3073v1

Nonlinear Sciences

Chaotic Dynamics

Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.100.234503

We performed high resolution numerical simulations of homogenous and isotropic compressible turbulence, with an average 3D Mach number close to 0.3. We study the statistical properties of intermittency for velocity, density and entropy. For the velocity field, which is the primary quantity that can be compared to the isotropic incompressible case, we find no statistical differences in its behavior in the inertial range due either to the slight compressibility or to the different dissipative mechanism. For the density field, we find evidence of ``front-like'' structures, although no shocks are produced by the simulation.

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