Incompressible variable-density turbulence in an external acceleration field

• Published in: Journal of fluid mechanics Vol. 827; pp. 506 - 535
• Main Authors: Gat, Ilana, Matheou, Georgios, Chung, Daniel, Dimotakis, Paul E.
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 25.09.2017
• Subjects: Acceleration; Baroclinic flow; Composition; Computational fluid dynamics; Computer simulation; Convection; Density; Diffusion layers; Diffusion rate; Dye dispersion; Dynamics; Entrainment; Fluid flow; Fluids; Growth rate; Incompressible flow; Laboratories; Lagrange multiplier; Mathematical analysis; MATHEMATICS AND COMPUTING; Mechanical engineering; Pressure gradients; Probability density functions; Probability theory; Ratios; Shear; Shear layers; Simulation; Statistical methods; Stream flow; Studies; Turbulence; Turbulent flow; shear layer turbulence; turbulent flows; turbulent mixing

Dynamics and mixing of a variable-density turbulent flow subject to an externally imposed acceleration field in the zero-Mach-number limit are studied in a series of direct numerical simulations. The flow configuration studied consists of alternating slabs of high- and low-density fluid in a triply...