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 9 of 9 for “"Vortex Models"”.
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Determination of a Simplified High-Order Vortex Equation for Radial Equilibrium with CFD Verification
… current design techniques utilizing a hybrid vortex model. This hybrid vortex model combines the well-established simple radial equilibrium vortex models into a higher order equation that will establish the basis for a more flow-accurate model. In this paper, we will discuss the basis and …
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Vorticity shedding over two-dimensional bodies
… wake downstream of these bodies. Two inviscid vortex models were developed to predict two different flow phenomena, namely the separated flow over a circular cylinder started impulsively from rest and propagating stall over a linear stationary cascade.
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A calorimetric study of the effects of surface energy in a type II superconductor
… compared to predictions based on laminar and vortex models of the mixed state"--Abstract, page i.
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Near-surface tornado wind field estimation using damage patterns
… damage indicators and tornado wind field models, 4) apply tree-fall analysis to different tornadoes. Post-storm damage from a total of nine tornadoes was documented in detail both on the ground and in the air. To rapidly collect the tree-fall directions of a large-scale tornado from aerial …
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The Canto of Ezra Pound as a Process Model
… human scientists have evolved a variety of models, one of which is a process model:</p> <p>“…defined as a formal plan describing a particular method for reaching a defined goal, a systematic way of describing how an individual or a system moves from point A to B. Such models usually consist …
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A simplified vortex sheet roll-up method for formation flight
… parameter as well as a truncation of the vortex sheet in the highly rolled-up areas are introduced in order to stabilize the computations. The trailing wing is simply modeled as a lifting line, and its induced drag is computed thanks to a near-field analysis. The results are compared to …
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The structure and stability of vortices in astrophysical discs
This thesis finds that vortex instabilities are not necessarily a barrier to their potential as sites for planetesimal formation. It is challenging to build planetesimals from dust within the lifetime of a protoplanetary disc and before such bodies spiral into the central star. Collecting matter in …
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Integrative data-driven approaches to tornado wind field reconstruction
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Application of a Helmholtz resonator excited by grazing flow for manipulation of a turbulent boundary layer.
… momentum balance equation and combination of the vortex sheet with discrete vortex models. A parametric study of the resonator showed that when the orifice length is increased the pressure fluctuations within the resonator are reduced, potentially due to the larger skin friction inside the …