Stratified shear flow instabilities at large Richardson numbers
نویسندگان
چکیده
منابع مشابه
The instability of stratified flows at large Richardson numbers.
In contrast to conventional expectations based on the stability of steady shear flows, elementary time-periodic stratified flows that are unstable at arbitrarily large Richardson numbers are presented here. The fundamental instability is a parametric one with twice the period of the basic state. This instability spontaneously generates local shears on buoyancy time scales near a specific angle ...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2009
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.3147934