Mixing Duct Pressure Distributions And Exhaust Flow Characteristics Of A High Temperature And Pressure Cylindrical Ejector
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| Author | : Brian Quinn |
| Publisher | : |
| Total Pages | : 95 |
| Release | : 1975 |
| Genre | : Air ducts |
| ISBN | : |
The thermodynamic and mixing characteristics of a family of inlet area ratio 26 ejectors have been measured across a range of primary reservoir pressures (0 to 80 psig) and temperatures (65 to 1000 degrees F). The length-to-duct diameter ratio of the ejectors was the family parameter and varied from 12.36 to 3.46. The distribution of pressure along the wall of the mixing duct clearly identified up to three distinct modes of turbulent mixing. They also substantiated prior observations that mixing is accelerated by heating the primary jet. The discrete modes of mixing were subjectively related to the acoustic properties of the greatly underexpanded primary nozzle.
| Author | : |
| Publisher | : |
| Total Pages | : 976 |
| Release | : 1990 |
| Genre | : Aeronautics |
| ISBN | : |
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.
| Author | : |
| Publisher | : |
| Total Pages | : 798 |
| Release | : 1987 |
| Genre | : Aircraft gas-turbines |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1114 |
| Release | : 1981 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 1388 |
| Release | : |
| Genre | : Government publications |
| ISBN | : |
| Author | : United States. Superintendent of Documents |
| Publisher | : |
| Total Pages | : 1408 |
| Release | : 1976 |
| Genre | : United States |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 580 |
| Release | : 1971 |
| Genre | : Aeronautics |
| ISBN | : |
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
| Author | : Neal Leonard Dyste |
| Publisher | : |
| Total Pages | : 162 |
| Release | : 1950 |
| Genre | : Air flow |
| ISBN | : |
| Author | : Martin D. Kiefer |
| Publisher | : |
| Total Pages | : 85 |
| Release | : 1963 |
| Genre | : Mechanical engineering |
| ISBN | : |
The properties of an incompressible fluid in the mixing chamber of a constant area cylindrical ejector are analyzed in a two-dimensional form. The flow field for velocity and temperature is assumed to be made up of regions in which uniform flow of the primary and secondary fluids exist, and which diminish with axial distance from the ejector entrance. The velocity and temperature distributions in the mixed region are assumed to have cosine shaped profiles. The compatible solutions are given an axial distribution by assuming a parabolic spread rate for the secondary fluid jet boundary. Results are generated in the form of a non-dimensional velocity and pressure, a normalized temperature and a Momentum Factor, as functions of axial distance.
| Author | : |
| Publisher | : |
| Total Pages | : 86 |
| Release | : 1986 |
| Genre | : |
| ISBN | : |
