{"id":{"repo_id":"nps","oai_identifier":"oai:calhoun.nps.edu:10945/18744"},"canonical_url":"https://search.dev.ndltd.org/etd/nps/oai:calhoun.nps.edu:10945/18744","repository":{"repo_id":"nps","name":"Naval Postgraduate School","base_url":"https://calhoun.nps.edu/server/oai/request"},"display":{"title":"Hot flow testing of multiple nozzle exhaust eductor systems.","abstract":"Hot flow model tests of multiple nozzle gas turbine exhaust eductor systems were conducted to evaluate the temperature effects of several eductor design modifications. A one-dimensional analysis of a simple eductor system based on conservation of momentum for an incompressible gas was used in determining the nondimensional parameters governing the flow. Eductor performance is defined in terms of these parameters. Compared to existing solid wall eductors, the addition of film cooling slots in the mixing stack, a mixing stack shroud and a double split ring diffuser section was found to significantly improve the pumping coefficient of the eductor, and drastically decrease all external surface temperatures as well as moderately reduce the maximum gas discharge temperature.","abstract_html":"Hot flow model tests of multiple nozzle gas turbine exhaust eductor systems were conducted to evaluate the temperature effects of several eductor design modifications. A one-dimensional analysis of a simple eductor system based on conservation of momentum for an incompressible gas was used in determining the nondimensional parameters governing the flow. Eductor performance is defined in terms of these parameters. Compared to existing solid wall eductors, the addition of film cooling slots in the mixing stack, a mixing stack shroud and a double split ring diffuser section was found to significantly improve the pumping coefficient of the eductor, and drastically decrease all external surface temperatures as well as moderately reduce the maximum gas discharge temperature.","abstract_has_math":false,"creators":["Hill, James Allan"],"institution":"Monterey, California. Naval Postgraduate School","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Mechanical Engineering","school":null,"contributors":[],"advisors":["Pucci, Paul F."],"committee_chairs":[],"committee_members":[],"year":1979,"date_issued":"1979-09","date_published":"1979-09","updated_at":"2026-07-27T20:26:38Z","subjects":[],"languages":["en_US"],"rights":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. 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A one-dimensional analysis of a simple eductor system based on conservation of momentum for an incompressible gas was used in determining the nondimensional parameters governing the flow. Eductor performance is defined in terms of these parameters. Compared to existing solid wall eductors, the addition of film cooling slots in the mixing stack, a mixing stack shroud and a double split ring diffuser section was found to significantly improve the pumping coefficient of the eductor, and drastically decrease all external surface temperatures as well as moderately reduce the maximum gas discharge temperature."]},{"key":"dc:title","label":"Title","values":["Hot flow testing of multiple nozzle exhaust eductor systems."]}]}],"canonical_facts":{"dc:contributor.advisor":["Pucci, Paul F."],"dc:contributor.department":["Mechanical Engineering"],"dc:creator":["Hill, James Allan"],"dc:date":["September 1979"],"dc:date.accessioned":["2012-11-16T19:30:21Z"],"dc:date.available":["2012-11-16T19:30:21Z"],"dc:date.issued":["1979-09"],"dc:description.abstract":["Hot flow model tests of multiple nozzle gas turbine exhaust eductor systems were conducted to evaluate the temperature effects of several eductor design modifications. A one-dimensional analysis of a simple eductor system based on conservation of momentum for an incompressible gas was used in determining the nondimensional parameters governing the flow. Eductor performance is defined in terms of these parameters. Compared to existing solid wall eductors, the addition of film cooling slots in the mixing stack, a mixing stack shroud and a double split ring diffuser section was found to significantly improve the pumping coefficient of the eductor, and drastically decrease all external surface temperatures as well as moderately reduce the maximum gas discharge temperature."],"dc:identifier.uri":["https://hdl.handle.net/10945/18744"],"dc:language.iso":["en_US"],"dc:publisher":["Monterey, California. Naval Postgraduate School"],"dc:rights":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. 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