The Effect Of Rotational Motion On Jet Impingement Cooling The Tornado Effect On Hairpin Vortices In Turbulent Convective Cooling
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The Effect Of Rotational Motion On Jet Impingement Cooling The Tornado Effect On Hairpin Vortices In Turbulent Convective Cooling
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Author :
language : en
Publisher:
Release Date : 1994
The Effect Of Rotational Motion On Jet Impingement Cooling The Tornado Effect On Hairpin Vortices In Turbulent Convective Cooling written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
The overall objective of the program is to enhance the effectiveness of turbine cooling by exploiting the presence and structures of vortices. Program A is concerned with jet impingement cooling and addresses the effects of bulk fluid rotation on jets, their vortical structures and cooling. A low-speed rotating water tunnel has been constructed for flow-visualization study of impinging jets in rotation: in addition, a rotating air rig was also constructed. The results show that the Contour of the impinging jet is crucial in determining the jet trajectory and both the favorable and adverse effects of rotation have been identified in the context of impingement cooling. Program B is concerned with convective and film-cooling. It focuses upon the so-called tornado effect, or the corewise transport of heat through the legs of hairpin vortices, which could lead to enhanced cooling in turbulent flows. An explicit confirmation of the effect have been established by ain water and unsteady heat transfer measurements in air. (AN).
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1995
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Rotational And Shower Head Cooling Hole Effects On Leading Edge Jet Impingement Heat Transfer
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Author : Weston Olson
language : en
Publisher:
Release Date : 2020
Rotational And Shower Head Cooling Hole Effects On Leading Edge Jet Impingement Heat Transfer written by Weston Olson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Jet Impingement and shower head cooling are critical cooling techniques used to maintain turbine blades at operational temperatures. Jet impingement is extremely effective at removing large amounts of heat flux from the target surface, the inner blade wall, through stagnation point heat transfer. Shower head cooling produces a cooling film around the exterior of the blade, in return reducing external heat flux.
Effect Of Surface To Jet Temperature Difference On Impingement Cooling Of Rotating Bodies
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Author : Scott Allen Berning
language : en
Publisher:
Release Date : 1982
Effect Of Surface To Jet Temperature Difference On Impingement Cooling Of Rotating Bodies written by Scott Allen Berning and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Disks, Rotating categories.
An Equation For Vortex Motion Including Effects Of Buoyancy And Sources With Applications To Tornadoes
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Author : Robert C. Costen
language : en
Publisher:
Release Date : 1970
An Equation For Vortex Motion Including Effects Of Buoyancy And Sources With Applications To Tornadoes written by Robert C. Costen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Winds categories.
A new equation is derived for the motion of vorticity in a general fluid, including the effects of viscosity, compressibility, nonhomogeneity, and nonconservative forces. The equation holds, in particular, for vortices which may not move with the fluid. A linearized form of this equation is applied to tornado cyclones and to the twin tornado of April 11, 1965, near Elkhart, Indiana. It is shown that the displacement of tornado cyclones to the right of the mean tropospheric winds may be accounted for by the upward efflux of fluid from the cyclone into the jet stream. Also, the retarded revolution rate of the twin tornado may be due in part to an attractive "buoyancy" force acting on the partially rarefied cores of the pair.
Rotational Effects On Impingement Cooling
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Author :
language : en
Publisher:
Release Date : 1985*
Rotational Effects On Impingement Cooling written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985* with Gas-turbines categories.
Effects Of An Embedded Vortex On A Single Film Cooling Jet In A Turbulent Boundary Layer
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Author : Warren W. Williams
language : en
Publisher:
Release Date : 1988
Effects Of An Embedded Vortex On A Single Film Cooling Jet In A Turbulent Boundary Layer written by Warren W. Williams and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Thermal stresses categories.
Effects of embedded longitudinal vortices on heat transfer in a turbulent boundary layer film cooled from a single injections hole are discussed. Film coolant was injected at blowing ratios 0.50 to 1.50 at a freestream velocity of 10 m/s. A single longitudinal vortex was induced upstream of the film-cooling holes. Heat transfer measurement were made downstream of injection. Flow visualization tests were conducted after the injectant was contaminated with smoke. Surveys of mean velocity and mean temperature were also made in different spanwise normal planes. For all blowing ratios examined, the embedded vortices cause significant alterations to wall heat transfer and to film-cooling distributions. Embedded vortex, Film-cooling single jet, Heat transfer, Endwall secondary flows. (jes).
The Study Of Impingement Cooling Effects Using A Variable Diameter Synthetic Jet
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Author : Alexander John Zielinski
language : en
Publisher:
Release Date : 2018
The Study Of Impingement Cooling Effects Using A Variable Diameter Synthetic Jet written by Alexander John Zielinski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Effect Of Jet Position And Shaft Obstruction On Impingement Cooling Of Rotating Bodies
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Author : Therayut Suwanprateep
language : en
Publisher:
Release Date : 1982
Effect Of Jet Position And Shaft Obstruction On Impingement Cooling Of Rotating Bodies written by Therayut Suwanprateep and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Disks, Rotating categories.
Effect Of Jet Prandtl Number On Impingement Cooling Of Rotating Bodies
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Author : Jaime Joaquin Saavedra
language : en
Publisher:
Release Date : 1981
Effect Of Jet Prandtl Number On Impingement Cooling Of Rotating Bodies written by Jaime Joaquin Saavedra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Disks, Rotating categories.