Maintenance of oscillations in a turbulent Ekman layer |
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| Authors: | W O Criminale Jr G F Spooner Jr |
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| Institution: | (1) Department of Oceanography, Geophysics Program and Applied Mathematics Group, USA;(2) Department of Oceanography, University of Washington, 98195 Seattle, Washington, USA |
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| Abstract: | The turbulent Ekman boundary layer is modelled by prescribing a particular behavior for the eddy viscosity and thereby making it possible to calculate velocity profiles. This flow is then examined with respect to stability. Comparisons for this system are made with the more substantial documented features of a conventional flat-plate turbulent boundary layer without rotation and the accompanying stability investigations that have been made. Unlike the results known for the nonrotating layer, it appears that viscous oscillations are possible when rotation is present. General arguments are made in terms of the physics to substantiate this finding and one conjecture is that the modelled system does not represent a fully developed or equilibrium turbulent flow.New address: Naval Research Laboratory, Washington, D.C., U.S.A. |
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