TY - GEN
T1 - Wetness effect on transonic moist-air flow through a compressor rotor
AU - Moriguchi, Shota
AU - Miyazawa, Hironori
AU - Furusawa, Takashi
AU - Yamamoto, Satoru
PY - 2018/1/1
Y1 - 2018/1/1
N2 - In this study, we simulated moist-air flows through a 3-D transonic compressor rotor, NASA Rotor 37, to investigate the thermophysical effects of evaporation of water droplets on 3-D compressor aerodynamics. The obtained results indicated that the total pressure ratio increased in the moist-air cases when compared with dry-air case as a result of the cooling due to evaporation. While the choking mass-flow rate is almost identical for the dry-air case and the moist-air cases, the operating curve was shifted to nearly choked state in the moist-air cases. Besides this, unsteady flows were obtained at higher mass-flow rate in the moist-air cases when compared with the dry-air case. As a result, a significant deterioration in the operation was observed in the moist-air cases. This is due to the rapid and significant evaporation of water droplets after the passage shock. A secondary flow streaming radially outside toward the tip through the separated region intensified and contributed to a formation of large blockage around the tip region.
AB - In this study, we simulated moist-air flows through a 3-D transonic compressor rotor, NASA Rotor 37, to investigate the thermophysical effects of evaporation of water droplets on 3-D compressor aerodynamics. The obtained results indicated that the total pressure ratio increased in the moist-air cases when compared with dry-air case as a result of the cooling due to evaporation. While the choking mass-flow rate is almost identical for the dry-air case and the moist-air cases, the operating curve was shifted to nearly choked state in the moist-air cases. Besides this, unsteady flows were obtained at higher mass-flow rate in the moist-air cases when compared with the dry-air case. As a result, a significant deterioration in the operation was observed in the moist-air cases. This is due to the rapid and significant evaporation of water droplets after the passage shock. A secondary flow streaming radially outside toward the tip through the separated region intensified and contributed to a formation of large blockage around the tip region.
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U2 - 10.1115/FEDSM2018-83422
DO - 10.1115/FEDSM2018-83422
M3 - Conference contribution
AN - SCOPUS:85056190645
T3 - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
BT - Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting, FEDSM 2018
Y2 - 15 July 2018 through 20 July 2018
ER -