Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 320 for “"mean flow"”.
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Eddy-mean flow interactions in western boundary current jets
This thesis examines the nature of eddy-mean flow interactions in western boundary current jets and recirculation gyre dynamics from both theoretical and observational perspectives. It includes theoretical studies of eddy-mean flow interactions in idealized configurations relevant to western …
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Eddy-mean flow interactions in western boundary current jets
This thesis examines the nature of eddy-mean flow interactions in western boundary current jets and recirculation gyre dynamics from both theoretical and observational perspectives. It includes theoretical studies of eddy-mean flow interactions in idealized configurations relevant to western …
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Mean flow-harmonic interaction : an alternative approach to stability theories
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1986.
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Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent
… currents. They are frequently observed as meanders of the equatorial front in satellite sea surface temperature maps. Here, they are observed as large oscillations in the meridional velocity records at l10°W with an energy peak at 21 days. Westward phase propagation is observed in this band …
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The acoustics of curved and lined cylindrical ducts with mean flow
… considers linear perturbations to the steady flow of a compressible inviscid perfect gas along a cylindrical or annular duct. Particular consideration is given to the model of the duct boundary, and to the effect of curvature of the duct centreline. For a duct with a straight centreline and a …
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Observations of wave-mean flow interaction in the Pacific equatorial undercurrent
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, and, Woods Hole Oceanographic Institution, 1991.
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Flow Shop Sequencing With Unequal Ready Times to Minimize Mean Flow Time
Made available in DSpace on 2014-12-13T19:55:31Z (GMT). No. of bitstreams: 1 7915337.pdf: 4561714 bytes, checksum: 1d16fc34b5f5bc98b133364e7128a789 (MD5) Previous issue date: 1979
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Mean Flow and Turbulence Characteristics of Pool -Riffle Structures in Low -Gradient Streams
… carried out to investigate the three-dimensional flow structure and turbulence characteristics of pools and riffles. The experiments included three different bed configurations: flat bed (FB), centered pools and riffles (CPR), and alternate pools and riffles (APR). The CPR configuration was …
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Mean flow measurements of heated supersonic slot injection into a high Reynolds number supersonic stream
Mean flow measurements and short-duration Schlieren and Shadowgraph photographs of heated and unheated supersonic slot injection of air into a supersonic air stream are presented for the purpose of observing the mixing which occurs in the resulting shear layer. The heated injected jet …
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Effect of width-to-depth ratio on the mean flow velocities for a Kinoshita meander bend
… effect of different width-to-depth ratios on the mean surface velocities of a Kinoshita meander bend. The characteristics of flow in such a bend have been studied by Ancalle (2007) and Abad and Garcia (2009a) for width-to-depth ratios equal to 2.4 and 4.0. The present study extends that work and …
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Mean-flow measurements of a turbulent mixing layer from helium slot injection into a supersonic airstream
… include documenting the helium slot-injection flowfield; providing a baseline for use as a reference for future work; contributing representative and consistent data to the general database; and increasing understanding of shear layer dynamics, especially as a result of foreign-gas injection. …
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Investigation of mean flow and vertical vorticity in turbulent convection using spectral simulations on massively parallel processors
… are isothermal, no-slip, impermeable walls. The flow-fields considered here range from steady horizontally-oriented two-dimensional rolls to unsteady three-dimensional turbulence.
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Mean Flow Characteristics and Turbulent Structures of Turbulent Boundary Layers in Varying Pressure Gradients and Reynolds Numbers
Turbulent boundary layers flowing over a smooth surface were studied to understand the influence of varying pressure gradients and flow Reynolds number on the boundary layer growth and mean turbulent properties. The test was conducted in the Virginia Tech Stability Wind Tunnel with a 0.914 m chord …
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Mesoscale variability and mean flow interaction near the Gulf Stream as seen by satellite altimetry and numerical modelling
The interaction between the eddy field and the mean flow near the Gulf Stream is studied here using satellite altimeter measurements and an eddy resolving numerical modeL. The eddy vorticity flux in the quasigeostrophic framework is obtained from the stream function standard deviation and spatial …
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Mesoscale variability and mean flow interaction near the Gulf Stream as seen by satellite altimetry and numerical modelling
The interaction between the eddy field and the mean flow near the Gulf Stream is studied here using satellite altimeter measurements and an eddy resolving numerical model. The eddy vorticity flux in the quasigeostrophic framework is obtained from the stream function standard deviation and spatial …
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Ice shelf-ocean interactions in a general circulation model : melt-rate modulation due to mean flow and tidal currents
… attention in the context of observed changes in flow speeds of marine ice sheets around Antarctica. Modeling these interactions requires parameterizing the turbulent boundary layer processes to infer melt rates from the oceanic state at the ice-ocean interface. Here we explore two such …
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Ice shelf-ocean interactions in a general circulation model : melt-rate modulation due to mean flow and tidal currents
… attention in the context of observed changes in flow speeds of marine ice sheets around Antarctica. Modeling these interactions requires parameterizing the turbulent boundary layer processes to infer melt rates from the oceanic state at the ice-ocean interface. Here we explore two such …
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Mean flow and turbulence measurements in the wake of a slender propeller-driven body including effects of pitch angle
… sail to an axisymmetric body is also considered. Mean flow velocities, static pressure, flow angularity, and turbulence quantities are presented at three downstream stations Z/D = 2, 10, and 40. The measurements were taken using a yawhead pressure probe and hot-wire sensors. The testing was …
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