Hot flow testing of multiple nozzle exhaust eductor systems.
Hill, James Allan
Pucci, Paul F.
MetadataShow full item record
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.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Operational performance characteristics of a multiply-shrouded, angle-diffuser stack gas eductor in turbulent cross-flow. Staples, Ralph E.,Jr. (Monterey, California. Naval Postgraduate School, 1983);
Dudar, Stephen W. (Monterey, California. Naval Postgraduate School, 2003-12);A preliminary design study was conducted to determine the geometry for an enhanced mixing eductor system for the Landing, Helicopter Assault Ship Replacement (LHA R) program gas turbine exhaust. A one-dimensional analytical ...