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Waves in Turbulent Stably Stratified Shear FlowTwo approaches for the identification of internal gravity waves in sheared and unsheared homogeneous stratified turbulence are investigated. First, the phase angle between the vertical velocity and density fluctuations is considered. It was found, however, that a continuous distribution of the phase angle is present in weakly and strongly stratified flow. Second, a projection onto the solution of the linearized inviscid equations of motion of unsheared stratified flow is investigated. It was found that a solution of the fully nonlinear viscous Navier-Stokes equations can be represented by the linearized inviscid solution. The projection yields a decomposition into vertical wave modes and horizontal vortical modes.
Document ID
20020091899
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Jacobitz, F. G.
(California Univ. Riverside, CA United States)
Rogers, M. M.
(NASA Ames Research Center Moffett Field, CA United States)
Ferziger, J. H.
(Stanford Univ. CA United States)
Parks, John W.
Date Acquired
September 7, 2013
Publication Date
January 1, 2002
Subject Category
Fluid Mechanics And Thermodynamics
Meeting Information
Meeting: 2002 Summer Program of the Center for Turbulence Research
Country: Unknown
Start Date: January 1, 2002
Sponsors: Center for Turbulence Research
Distribution Limits
Public
Copyright
Public Use Permitted.
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