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.
KeywordsAnisotropy Convection Covariance Stratification Boulder
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