Record Details

Secondary circulations in Holmboe waves

ScholarsArchive at Oregon State University

Field Value
Title Secondary circulations in Holmboe waves
Names Smyth, William D. (creator)
Date Issued 2006 (iso8601)
Abstract A sequence of direct simulations is used to study mechanisms for the growth of secondary
circulations and turbulence in stratified shear flows. Five cases are examined, of which four deliver
Holmboe waves as the primary instability and the fifth generates Kelvin-Helmholtz billows.
Secondary circulations range in strength from weak, laminar motions to turbulence that destroys the
parent wave. Processes that drive disturbance growth include shear production via the Orr
mechanism, sheared convection in overturned regions, and sloping convection in stably stratified
wave crests. Results are compared with previous predictions based on normal mode stability
analysis.
Genre Article
Identifier Smyth, W. D. (2006). Secondary circulations in Holmboe waves. Physics of Fluids, 18. doi:10.1063/1.2210504

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