Effects of specific speed on the experimental performance of a radial-inflow turbine
Milton G. Kofskey, William J. Nusbaum, United States. National Aeronautics and Space Administration, Lewis Research Center
National Aeronautics and Space Administration, 1971 - Technology & Engineering - 28 pages
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100-percent configuration 53 percent area at equivalent blade-jet speed ratio calculated cific speed decrease in stator design blade-jet speed design rotor design stator throat different throat areas efficiency curves efficiency of 0.93 efficiency value efficiency with specific equivalent design speed equivalent mass flow exit flow angle exit static pressure extended rotor exducer Figure 8(b figure shows flow separation four stators kg/sec long-dashed curve mass flow rate maximum static efficiency maximum total efficiency peak efficiency Percent of design radius ratio range of specific Reynolds number rotor configurations rotor exducer extension rotor exit rotor extension Rotor losses rotor throat area Scroll-stator losses shows the variation specific speed range specific speed value speed and pressure stator and rotor stator pressure ratio stator throat area stator-rotor throat area total and static total to exit turbine efficiency turbine inlet turbine loss V/Vcr V/Vrr Variation of equivalent velocity diagrams velocity level W/Wcr WWcr