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Internal waves in sheared flows: Lower bound of the vorticity growth and propagation discontinuities in the parameter space

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dc.contributor Massachusetts Institute of Technology. Department of Mathematics
dc.contributor Staffilani, Gigliola
dc.creator Fraternale, Federico
dc.creator Domenicale, Loris
dc.creator Staffilani, Gigliola
dc.creator Tordella, Daniela
dc.date 2018-06-12T15:55:38Z
dc.date 2018-06-12T15:55:38Z
dc.date 2018-06
dc.date 2018-04
dc.date 2018-06-08T18:00:23Z
dc.date.accessioned 2023-03-01T18:06:34Z
dc.date.available 2023-03-01T18:06:34Z
dc.identifier 2470-0045
dc.identifier 2470-0053
dc.identifier http://hdl.handle.net/1721.1/116263
dc.identifier Fraternale, Federico et al. "Internal waves in sheared flows: Lower bound of the vorticity growth and propagation discontinuities in the parameter space." Physical Review E 97, 6 (June 2018): 063102 © 2018 American Physical Society
dc.identifier https://orcid.org/0000-0002-8220-4466
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278780
dc.description This study provides sufficient conditions for the temporal monotonic decay of enstrophy for two-dimensional perturbations traveling in the incompressible, viscous, plane Poiseuille, and Couette flows. Extension of Synge's procedure [J. L. Synge, Proc. Fifth Int. Congress Appl. Mech. 2, 326 (1938); Semicentenn. Publ. Am. Math. Soc. 2, 227 (1938)] to the initial-value problem allow us to find the region of the wave-number–Reynolds-number map where the enstrophy of any initial disturbance cannot grow. This region is wider than that of the kinetic energy. We also show that the parameter space is split into two regions with clearly distinct propagation and dispersion properties.
dc.format application/pdf
dc.language en
dc.publisher American Physical Society
dc.relation http://dx.doi.org/10.1103/PhysRevE.97.063102
dc.relation Physical Review E
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.rights American Physical Society
dc.source American Physical Society
dc.title Internal waves in sheared flows: Lower bound of the vorticity growth and propagation discontinuities in the parameter space
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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