Energetics aspects in Direct Numerical Simulations of a turbulent stratified flow: irreversible mixing
نویسندگان
چکیده
Direct Numerical Simulations of a linearly stratified bounded fluid in decaying turbulence are performed. The abscence of vertical periodicity allows the stratification of the system to evolve in time. We observe that mixing efficiency increases as a function of the Richardson number Ri, and saturates to a maximum value of 0.25. This evolution adjusts quantitatively to the statistical prediction of Venaille et al. (2016).
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تاریخ انتشار 2016