Transient Behavior of a Stably Stratified Homogeneous Turbulent Flow
The direct interaction approximation (KRAICHNAN ) is used to study the problem of scalar transport by a uniform mean scalar gradient in a decaying homogeneous turbulent flow. Cases that are studied include a passive scalar, such as temperature, and an active scalar, such as density, in a stably stratified flow. The direct interaction approximation is shown, from these preliminary results, to correctly predict the qualitative dynamics associated with these two problems.
KeywordsPassive Scalar Stable Stratification Scalar Transport Scalar Gradient Qualitative Dynamic
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