Influence of large-scale structure on the turbulent Prandtl number in a turbulent mixing layer

effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow

چکیده ندارد.

Effect of the Prandtl number on a stratified turbulent wake

Conditional large-scale structure of a high Reynolds number turbulent boundary layer

A spanwise array of 10 surface mounted hot-film shear-stress sensors coupled with a traversing hot-wire probe are used to identify the conditional structure associated with a large-scale skin-friction event in a high Reynolds number turbulent boundary layer (Reτ 14000). Instantaneous shear-stress data indicate the presence of large-scale structures at the wall that are comparable in scale and a...

On the turbulent Prandtl number in homogeneous stably stratified turbulence

In this paper, we derive a general relationship for the turbulent Prandtl number Pr t for homogeneous stably stratified turbulence from the turbulent kinetic energy and scalar variance equations. A formulation for the turbulent Prandtl number, Pr t , is developed in terms of a mixing length scale LM and an overturning length scale LE , the ratio of the mechanical (turbulent kinetic energy) deca...

Influence of scale-breaking phenomena on turbulent mixing rates.

Simulations not seen before compare turbulent mixing rates for ideal fluids and for real immiscible fluids with experimental values for the surface tension. The simulated real fluid mixing rates lie near the center of the range of experimental values. A comparison to theoretical predictions relating the mixing rate, the bubble width, and the bubble height fluctuations based on bubble merger mod...