An Experimental Investigation Of The Turbulent Mixing On Non Homogeneous Coaxial Jets

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An Experimental Investigation Of The Turbulent Mixing On Non Homogeneous Coaxial Jets

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Author : Louis J. Alpinieri
language : en
Publisher:
Release Date : 1963

An Experimental Investigation Of The Turbulent Mixing On Non Homogeneous Coaxial Jets written by Louis J. Alpinieri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.

Experimental results on the turbulent mixing process between carbon dioxide and hydrogen central jets exhausting into a moving concentric stream of air are presented. The diffusion of mass and momentum only are considered, since both streams are at approximately equal temperature. The flow velocities are in the low to high subsonic range. Principal points of investigation are the condition of equal velocity between jets and the condition of equal mass flow per unit area between jets. Radial and axial distributions of concentration and velocity are presented. On the basis of the measurements it is concluded that no tendency towards segregation of the stream exists when either the velocities or the mass flows of the streams are equal. Furthermore, it is demonstrated that the product of local density and eddy kinematic viscosity coefficient can be assumed to be solely dependent upon the axial coordinate. In agreement with previous results it is found that mass diffuses more readily than momentum. Finally, a formulation of the eddy viscosity and eddy diffusivity coefficients that adequately describe the results obtained is derived. (Author).

An Experimental Investigation Of The Mixing Of Compressible Air Jets In A Coaxial Configuration

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Author : James M. Eggers
language : en
Publisher:
Release Date : 1969

An Experimental Investigation Of The Mixing Of Compressible Air Jets In A Coaxial Configuration written by James M. Eggers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Airplanes categories.

Turbulent mixing of compressible air in supersonic and subsonic coaxial jet flows.

Turbulent Mixing Of Coaxial Compressible Hydrogen Air Jets

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Author : James M. Eggers
language : en
Publisher:
Release Date : 1971

Turbulent Mixing Of Coaxial Compressible Hydrogen Air Jets written by James M. Eggers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Airplanes categories.

A Theoretical And Experimental Investigation Of Axisymmetric Non Homogeneous Compressible Turbulent Mixing

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Author : Robert Frank Hurt
language : en
Publisher:
Release Date : 1970

A Theoretical And Experimental Investigation Of Axisymmetric Non Homogeneous Compressible Turbulent Mixing written by Robert Frank Hurt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.

Free Turbulent Mixing

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Author : Philip Thomas Harsha
language : en
Publisher:
Release Date : 1971

Free Turbulent Mixing written by Philip Thomas Harsha and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Turbulence categories.

Nasa Technical Note

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Author :
language : en
Publisher:
Release Date : 1971

Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with categories.

Experimental Investigation Of Turbulence In The Mixing Region Between Coaxial Streams

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Author : Thomas S. Zawacki
language : en
Publisher:
Release Date : 1968

Experimental Investigation Of Turbulence In The Mixing Region Between Coaxial Streams written by Thomas S. Zawacki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Nuclear rockets categories.

An Experimental Study Of Turbulent Mixing In Nonburning And Burning Hydrogen Air Coaxial Jets

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Author : Dan Yee
language : en
Publisher:
Release Date : 1982

An Experimental Study Of Turbulent Mixing In Nonburning And Burning Hydrogen Air Coaxial Jets written by Dan Yee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Jets categories.

Summary Report

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Author : D. E. Chriss
language : en
Publisher:
Release Date : 1972

Summary Report written by D. E. Chriss and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Aerodynamics categories.

Turbulent coaxial air-air mixing and hydrogen-air mixing were studied. The ratio of outer stream to jet veolcity was varied from 0.12 to 1.52 for the air-air mixing systems and from 0.16 to 0.42 for the hydrogen-air systems. Special emphasis was placed on the determination of the turbulent transport properties (especially the eddy viscosity and the Prandtl number) from the mean flow field measurements by use of an integral technique. Radial and axial profiles of velocity, concentration, shear stress, and eddy viscosity are presented, as well as radial profiles of the turbulent Prandtl number and representative static pressure profiles. In addition to the graphical presentation of the data, the mean flow field properties are presented in tabular form. The major conclusions of this investigation are: (1) the experimental technique used produced good quality meanflow field data; (2) the integral technique used for calculating the turbulent transport properties from the mean flow field data gave satisfactory results; (3) for the air-air system, a significant radial variation of the second regime eddy viscosity was observed for most of the tests; (4) the eddy viscosity decreases with increasing radius for the hydrogen-air systems; and (5) approximate average values for the turbulent Prandtl number are: 0.60 for the air-air tests and 0.80 to 0.85 for the hydrogen-air system.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports 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 Aeronautics categories.

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.