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Molecular-Level Simulations of Turbulence and Its Decay.
- Source :
-
Physical Review Letters . 2/10/2017, Vol. 118 Issue 6, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- We provide the first demonstration that molecular-level methods based on gas kinetic theory and molecular chaos can simulate turbulence and its decay. The direct simulation Monte Carlo (DSMC) method, a molecular-level technique for simulating gas flows that resolves phenomena from molecular to hydrodynamic (continuum) length scales, is applied to simulate the Taylor-Green vortex flow. The DSMC simulations reproduce the Kolmogorov -5/3 law and agree well with the turbulent kinetic energy and energy dissipation rate obtained from direct numerical simulation of the Navier-Stokes equations using a spectral method. This agreement provides strong evidence that molecular-level methods for gases can be used to investigate turbulent flows quantitatively. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TURBULENCE
*CHAOS theory
*KINETIC theory of gases
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 118
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 121345552
- Full Text :
- https://doi.org/10.1103/PhysRevLett.118.064501