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Keywords: valves
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Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031010.
Published Online: July 15, 2011
... of this paper. 30 06 2010 01 07 2010 15 07 2011 15 07 2011 aerodynamics blades cooling design engineering hydraulic turbines mass transfer transonic flow valves The subject of film cooling and the manner in which the aerodynamics are influenced by the injected flow...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041022.
Published Online: April 26, 2011
..., a flow measuring device, and a valve. It operates in two modes: In the first mode the valve is open, the probe is aspirated, and the nozzle is choked. The mass flow through the probe is measured using instrumentation placed downstream of the cooler, so that it does not have contact with the hot flow...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041015.
Published Online: April 21, 2011
...Hye Rim Kim; Seung Jin Song This paper presents a new analytical model of surge dynamics in turbo heat pumps. Turbo heat pumps use refrigerants as the working fluid and consist of a centrifugal compressor, condenser, expansion valve, and evaporator. Compared with a gas turbine engine, the turbo...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041001.
Published Online: June 30, 2009
...Ciro Cerretelli; Kevin Kirtley Fluidic oscillating valves have been used in order to apply unsteady boundary layer injection to “repair” the separated flow of a model diffuser, where the hump pressure gradient represents that of the suction surface of a highly loaded stator vane. The fluidic...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031012.
Published Online: April 10, 2009
... of advanced design. The investigations showed that bleed air can significantly reduce the stable flow range. Compressor rig experiments, using an array of unsteady pressure sensors and a bleed valve to simulate a typical turbocharger environment, suggest that the path into compression system instability...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2007, 129(2): 247–257.
Published Online: May 31, 2006
...Sarah M. Coulthard; Ralph J. Volino; Karen A. Flack Pulsed film cooling was studied experimentally to determine its effect on film-cooling effectiveness and heat transfer. The film-cooling jets were pulsed using solenoid valves in the supply air line. Cases with a single row of cylindrical film...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2006, 128(3): 564–571.
Published Online: January 25, 2006
... and film effectiveness from a single test. Detailed Frossling number and film effectiveness distributions were obtained for all flow conditions. Jet pulsing frequencies of 5 Hz, 10 Hz, and 20 Hz have been studied. The effect of duty cycle created by the valve opening and closing times was also set...