Experimental research for seven exhaust ejector system combinations, including four two-dimensional (2-D) lobed nozzles and three 2-D mixing tubes, has been conducted to investigate the effect of the lobe structure on the aerodynamic performances of the ejector systems. Test results show that: 2-D eligned lobed nozzles have better pumping and mixing enhancement abilities than the 2-D staggered lobed nozzles, but they also cause bigger pressure losses; the 2-D lobed nozzle with equal lobe width have better aerodynamic performances than the 2-D lobed nozzle with bigger inner lobe width. 2-D aligned scalloped lobed nozzle has the best pumping and mixing enhancement performances, but it also has the biggest pressure loss coefficient. Among the tested combinations, the combination of 2-D staggered lobed nozzle with equal lobe width and 2-D mixing tube with multiple-ring cooling structure has the best combined aerodynamic performances.
- International Gas Turbine Institute
Experimental Research on the Aerodynamic Performances of 2-D Lobed Exhaust Ejector Systems
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Hu, H, Liu, H, Li, L, & Wu, S. "Experimental Research on the Aerodynamic Performances of 2-D Lobed Exhaust Ejector Systems." Proceedings of the ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery. Birmingham, UK. June 10–13, 1996. V002T02A005. ASME. https://doi.org/10.1115/96-GT-243
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