Secularly growing oscillations in a stratified rotating fluid
نویسندگان
چکیده
A simple exact solution of the Boussinesq equations of motion, thermal energy, and mass conservation is obtained for an oscillatory flow regime in a stably stratified rotating fluid. The flow is unbounded and characterized by velocity gradients that vary with time but are spatially uniform—the basic state of Craik-Criminale flows. The solution describes an oscillatory convergent-divergent flow in which the linear (normal) strain rates are periodic. However, two of the shear strain rates are forced by the linear strain rates, and their amplitudes grow linearly with time. C © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4722351]
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