Coherent structures in dissipative particle dynamics simulations of the transition to turbulence in compressible shear flows

Jan-Willem van de Meent, Alexander Morozov, Ellak Somfai, Eric Sultan, Wim van Saarloos

Research output: Contribution to journalArticlepeer-review

Abstract

We present simulations of coherent structures in compressible flows near the transition to turbulence using the dissipative particle dynamics method. The structures we find are remarkably consistent with experimental observations and direct numerical simulations (DNS) simulations of incompressible flows, despite a difference in Mach number of several orders of magnitude. The bifurcation from the laminar flow is bistable and shifts to higher Reynolds numbers when the fluid becomes more compressible. This work underlines the robustness of coherent structures in the transition to turbulence and illustrates the ability of particle-based methods to reproduce complex nonlinear instabilities.

Original languageEnglish
Article number015701
Pages (from-to)-
Number of pages4
JournalPhysical Review E - Statistical, Nonlinear and Soft Matter Physics
Volume78
Issue number1
DOIs
Publication statusPublished - Jul 2008

Keywords

  • PIPE-FLOW
  • TRAVELING-WAVES

Cite this