Author: T. J. O'Connor
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
Recent attempts to predict the heat transfer from a high enthalpy, compressible free jet impinging upon surfaces in its path have suffered from a complete lack of knowledge concerning the behavior of turbulent jets of dissociated gases. Although it had been assumed that high enthalpy gas streams would exhibit the characteristics of cold jets, which have been subjected to extensive study, there had been no experimental evidence to support this contention. A research program was conducted to determine radial and axial variations in fluid properties, i.e., velocity, density, enthalpy, etc., in compressible free jets of dissociated gases produced by electric-arc plasma generators. Experimental investigations were confined to the near flowfield of the jets, since 90 percent of change in jet fluid properties, from their initial values at the arc nozzle-exit plane to the properties of the ambient fluid, was accomplished within 40 nozzle radii from the jet origin. Heat-transfer rates from these jets, when impinging upon a flat surface perpendicular to the jet axis, were determined experimentally. Correlation of this data could then be accomplished by means of a relationship similar to those for stagnation-point heat transfer to blunt bodies in a uniform stream when local jet properties were employed. (Author).
Turbulent Mixing of Axisymmetric Jets of Partially Dissociated Nitrogen with Ambient Air
Author: T. J. O'Connor
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
Recent attempts to predict the heat transfer from a high enthalpy, compressible free jet impinging upon surfaces in its path have suffered from a complete lack of knowledge concerning the behavior of turbulent jets of dissociated gases. Although it had been assumed that high enthalpy gas streams would exhibit the characteristics of cold jets, which have been subjected to extensive study, there had been no experimental evidence to support this contention. A research program was conducted to determine radial and axial variations in fluid properties, i.e., velocity, density, enthalpy, etc., in compressible free jets of dissociated gases produced by electric-arc plasma generators. Experimental investigations were confined to the near flowfield of the jets, since 90 percent of change in jet fluid properties, from their initial values at the arc nozzle-exit plane to the properties of the ambient fluid, was accomplished within 40 nozzle radii from the jet origin. Heat-transfer rates from these jets, when impinging upon a flat surface perpendicular to the jet axis, were determined experimentally. Correlation of this data could then be accomplished by means of a relationship similar to those for stagnation-point heat transfer to blunt bodies in a uniform stream when local jet properties were employed. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
Recent attempts to predict the heat transfer from a high enthalpy, compressible free jet impinging upon surfaces in its path have suffered from a complete lack of knowledge concerning the behavior of turbulent jets of dissociated gases. Although it had been assumed that high enthalpy gas streams would exhibit the characteristics of cold jets, which have been subjected to extensive study, there had been no experimental evidence to support this contention. A research program was conducted to determine radial and axial variations in fluid properties, i.e., velocity, density, enthalpy, etc., in compressible free jets of dissociated gases produced by electric-arc plasma generators. Experimental investigations were confined to the near flowfield of the jets, since 90 percent of change in jet fluid properties, from their initial values at the arc nozzle-exit plane to the properties of the ambient fluid, was accomplished within 40 nozzle radii from the jet origin. Heat-transfer rates from these jets, when impinging upon a flat surface perpendicular to the jet axis, were determined experimentally. Correlation of this data could then be accomplished by means of a relationship similar to those for stagnation-point heat transfer to blunt bodies in a uniform stream when local jet properties were employed. (Author).
Free Turbulent Mixing
Author: Philip Thomas Harsha
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 340
Book Description
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 340
Book Description
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684
Book Description
NASA Technical Paper
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 938
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 938
Book Description
Columbia Accident Investigation Board Report
Author: United States. Columbia Accident Investigation Board
Publisher:
ISBN:
Category : Space shuttles
Languages : en
Pages : 690
Book Description
Publisher:
ISBN:
Category : Space shuttles
Languages : en
Pages : 690
Book Description
Dynamic Flow Model for Low-BTU Gasification of Coal for Electric Power Systems
Author: J. D. Bianca
Publisher:
ISBN:
Category : Coal gasification
Languages : en
Pages : 372
Book Description
Publisher:
ISBN:
Category : Coal gasification
Languages : en
Pages : 372
Book Description
NASA Technical Paper
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 540
Book Description
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 540
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1090
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1090
Book Description
Research and Development Report
Author:
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 650
Book Description
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 650
Book Description
Turbulent Mixing of Axisymmetric Compressible Jets
Author: Randall C. Maydew
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 60
Book Description
Velocity profiles at five axial stations in the half-jet mixing region of Mach 0.7, 0.85, 0.95, 1.49, and 1.96 free jets were measured. The nondimensional velocity distributions are similar, and correlate with the theory of Crane for incompressible flow. The half-jet spreading rate is essentially constsnt at subsonic speeds and decreases at supersonic speeds. The variation of jet spreading parameter with Mach number was determined from correlation of these and other data.
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 60
Book Description
Velocity profiles at five axial stations in the half-jet mixing region of Mach 0.7, 0.85, 0.95, 1.49, and 1.96 free jets were measured. The nondimensional velocity distributions are similar, and correlate with the theory of Crane for incompressible flow. The half-jet spreading rate is essentially constsnt at subsonic speeds and decreases at supersonic speeds. The variation of jet spreading parameter with Mach number was determined from correlation of these and other data.