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Three Dimensional Trainling Vortex Structure In The Near Wake Of A Rectangular Airflow
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Book Synopsis Three-dimensional Trainling Vortex Structure in the Near Wake of a Rectangular Airflow by : Jason Marc Ortega
Download or read book Three-dimensional Trainling Vortex Structure in the Near Wake of a Rectangular Airflow written by Jason Marc Ortega and published by . This book was released on 1998 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Studies of Three-dimensional Breakdown in Trailing Vortex Wakes by :
Download or read book Numerical Studies of Three-dimensional Breakdown in Trailing Vortex Wakes written by and published by . This book was released on 1976 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Vortex Structure in the Wake of a Sphere by : Hsien-Ping Pao
Download or read book On Vortex Structure in the Wake of a Sphere written by Hsien-Ping Pao and published by . This book was released on 1975 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents results showing the three-dimensional vortex shedding structure when a sphere is towed at a constant velocity through a stratified fluid. It is found that for certain Richardon and Reynolds numbers the vortex is shed three-dimensionally. The stratification however quickly inhibits the vertical motion and the initially turbulent wake collapses and reveals the vertically oriented portion of the vortex structure, reminiscent of two-dimensional vortex street behind a circular cylinder when viewed from above. Two branches of a double helix are continuously unwinding in an opposite sense from the formation region. The double helical model satisfies Thompson's circulation theorem.
Book Synopsis Study of Three-dimensional Vortex Shedding in the Wake of a Square Cylinder by : Joseph Robichaux
Download or read book Study of Three-dimensional Vortex Shedding in the Wake of a Square Cylinder written by Joseph Robichaux and published by . This book was released on 1997 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady, Three Dimensional Simulation of Vortex Breakdown by : Thomas John
Download or read book Unsteady, Three Dimensional Simulation of Vortex Breakdown written by Thomas John and published by . This book was released on 2001 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure of a Trailing Vortex Wake by : Joseph A. Miranda
Download or read book The Structure of a Trailing Vortex Wake written by Joseph A. Miranda and published by . This book was released on 1996 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure of a Three-dimensional Vortex by : Saeed Orangi
Download or read book The Structure of a Three-dimensional Vortex written by Saeed Orangi and published by . This book was released on 1994 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Structure in Laminar and Turbulent Wakes by : Anil Prasad
Download or read book Three-dimensional Structure in Laminar and Turbulent Wakes written by Anil Prasad and published by . This book was released on 1996 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Legislazione e controllo igienico del latte in Svizzera by :
Download or read book Legislazione e controllo igienico del latte in Svizzera written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Three-dimensional Vortex Structure of an Impacting Water Drop by : Bill James Peck
Download or read book The Three-dimensional Vortex Structure of an Impacting Water Drop written by Bill James Peck and published by . This book was released on 1993 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Instability of Wake Vortices Near the Ground by : Alexandre Corjon
Download or read book Three-dimensional Instability of Wake Vortices Near the Ground written by Alexandre Corjon and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toward Three-dimensional Modeling of a Wake Vortex Pair in the Turbulent Planetary Boundary Layer by : D. G. Schowalter
Download or read book Toward Three-dimensional Modeling of a Wake Vortex Pair in the Turbulent Planetary Boundary Layer written by D. G. Schowalter and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Turbulence Structure of Trailing Vortice Wakes by :
Download or read book The Turbulence Structure of Trailing Vortice Wakes written by and published by . This book was released on 1996 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present investigation is a two-part study of the mean flow and turbulence structure of isolated vortices and counter-rotating vortex pairs. In the first part, the turbulence structure of an isolated vortex was studied using three-component velocity measurements. Vortices were generated using two symmetrical airfoils. Measurements were made in cross-sectional grids and profiles over a range of Reynolds numbers and downstream distances. Contours of axial normal stress were high-pass filtered to remove the contributions of wandering to the velocity fluctuations. This process reveals a vortex core which is laminar and is surrounded by a region of high turbulence. Core velocity profiles reveal that maximum tangential velocity increases with Reynolds number and decreases with distance downstream. Core radius increases with distance downstream and decreases with Reynolds number. In the second part, flow visualizations of the wake behind a delta wing model were made for a range of Reynolds numbers and lift coefficients. These visualizations reveal the near-instantaneous turbulence structure of the wing wake which is dominated by a vortex pair and a connecting 'braid' wake. The braid spacing decreases with increasing Reynolds number and is independent of lift coefficient. The extent of the braid downstream of the wing increases with lift coefficient and decreases with increasing Reynolds number. The large turbulence scales in the wing wake were found to increase in discrete jumps indicating some sort of reorganization of turbulence such as pairing. This reorganization of turbulence was found to occur more quickly as Reynolds number is increased.
Book Synopsis Investigation of Three-dimensional Vortex Wake Interaction with the Ground by : Ihab G. Adam
Download or read book Investigation of Three-dimensional Vortex Wake Interaction with the Ground written by Ihab G. Adam and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-Dimensional Vortex Interactions in Turbulent Boundary Layers by : C. R. Smith
Download or read book Three-Dimensional Vortex Interactions in Turbulent Boundary Layers written by C. R. Smith and published by . This book was released on 1985 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: A combined analytical experimental program, which has as its continuing objective the detailed investigation of the three dimensional vortex interactions which take place in turbulent boundary layers, is described and the accomplishments detailed. The analytical and numerical studies have examined both the development and characteristics of loop and hairpin vortices in both uniform and shear flows; particular attention has been paid to the strong three dimensional, inviscid viscous interaction of these types of vortical flow structures with wall region fluid. The experimental studies have focussed on the creation & detailed examination of three dimensional hairpin vortices, developing flow visualization patterns for cross-comparison with both the analytical studies and fully turbulent boundary layer flows. A technique for developing quantitative data by image processing of the visualization patterns is also described. Keywords: Turbulent boundary layer; Coherent structure; Flow visualization; Numerical modelling; Vortex wall interactions; Computer aided analysis; Loop vortices; Hairpin vortices.
Book Synopsis Flow Structure and Vorticity Transport on a Plunging Wing by : Azar Eslam Panah
Download or read book Flow Structure and Vorticity Transport on a Plunging Wing written by Azar Eslam Panah and published by . This book was released on 2014 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure and dynamics of the flow field created by a plunging flat plate airfoil are investigated at a chord Reynolds number of 10,000 while varying plunge amplitude and Strouhal number. Digital particle image velocimetry measurements are used to characterize the shedding patterns and the interactions between the leading and trailing edge vortex structures (LEV and TEV), resulting in the development of a wake classification system based on the nature and timing of interactions between the leading- and trailing-edge vortices. The convection speed of the LEV and its resulting interaction with the TEV is primarily dependent on reduced frequency; however, at Strouhal numbers above approximately 0.4, a significant influence of Strouhal number (or plunge amplitude) is observed in which LEV convection is retarded, and the contribution of the LEV to the wake is diminished. It is shown that this effect is caused by an enhanced interaction between the LEV and the airfoil surface, due to a significant increase in the strength of the vortices in this Strouhal number range, for all plunge amplitudes investigated. Comparison with low-Reynolds-number studies of plunging airfoil aerodynamics reveals a high degree of consistency and suggests applicability of the classification system beyond the range examined in the present work. Some important differences are also observed. The three-dimensional flow field was characterized for a plunging two-dimensional flat-plate airfoil using three-dimensional reconstructions of planar PIV data. Whereas the phase-averaged description of the flow field shows the secondary vortex penetrating the leading-edge shear layer to terminate LEV formation on the airfoil, time-resolved, instantaneous PIV measurements show a continuous and growing entrainment of secondary vorticity into the shear layer and LEV.
Book Synopsis Three-dimensional Vortex Dynamics in Oscillating Flows by : Miguel Silander Canals
Download or read book Three-dimensional Vortex Dynamics in Oscillating Flows written by Miguel Silander Canals and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamics of oscillating flows past roughness elements often are dominated by coherent vortical structures. These vortices contribute significantly to the dispersion, mixing and transport of sediments, nutrients and pollutants at a wide range of space and time scales. The focus of this dissertation is in the three-dimensional (3D) structure and dynamics of these vortices, and how the vortex mechanics influence the flow.
