Kelvin-Helmholtz billow evolution from a localized source

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/m900nv87j

Descriptions

Attribute Name	Values
Creator	Smyth, William D.
Abstract	The envelope function for Kelvin–Helmholtz billows growing from a point disturbance is derived on the basis of linear perturbation theory. The result describes an elliptical patch of billows that expands linearly in time as the billows grow. An analytical model of the dispersion relation is used to derive quantitative expressions for the spreading rate and ellipticity of the patch as functions of the bulk Richardson number. The theoretical results are verified using a combination of two- and three-dimensional nonlinear simulations, and are compared with visual observations of billow patches in the atmosphere. Keywords: Turbulence, Stratified shear flow, Instability
Resource Type	Article
DOI	https://doi.org/10.1256/qj.03.226
Date Available	2010-09-30T19:22:22+00:00
Date Issued	2004
Citation	Smyth, W. D. (2004). Kelvin-Helmholtz billow evolution from a localized source. Quarterly Journal of the Royal Meteorological Society, 130, 2753-2766. doi:10.1256/qj.03.226
Journal Title	Quarterly Journal of the Royal Meteorological Society
Journal Volume	130
Rights Statement	Copyright Not Evaluated
Funding Statement (additional comments about funding)	National Science Foundation grant OCE0095640.
Language	English [eng]
Replaces	http://hdl.handle.net/1957/18615