Turbulent Mixing of Gases with Different Densities

Mixing Invariant Densities

| For many chaotic systems there appears to be a single asymptotic distribution describing the frequency with which almost all trajectories visit diierent regions of state space. Such a distribution is commonly called the \physical" invariant measure or \natural" invariant measure of the system. Consider the evolution of a cluster of initial conditions under the action of the system. This clust...

Effect of Merging Angle on Turbulent Mixing Layers

Turbulent mixing and beyond.

Turbulence is a supermixer. Turbulent mixing has immense consequences for physical phenomena spanning astrophysical to atomistic scales under both high- and low-energy-density conditions. It influences thermonuclear fusion in inertial and magnetic confinement systems; governs dynamics of supernovae, accretion disks and explosions; dominates stellar convection, planetary interiors and mantle-lit...

Turbulent mixing with physical mass diffusion.

Simulated mixing rates of the Rayleigh-Taylor instability for miscible fluids with physical mass diffusion are shown to agree with experiment; for immiscible fluids with physical values of surface tension the numerical data lie in the center of the range of experimental values. The simulations are based on an improved front tracking algorithm to control numerical surface tension and on improved...

Turbulent mixing of stratified flows

A mathematical model for turbulent mixing of stratified, sheared flows is developed and explored. Two applications are emphasized, one to the dynamics of the ocean well–mixed layer, and another to the analysis of the stability of equilibrium profiles away from boundaries.