Effect of inlet wetness on transonic wet-steam and moist-air flows in turbomachinery

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11 Citations (Scopus)

Abstract

This study investigates the effect of inlet wetness on transonic wet-steam and moist-air flows through turbine and compressor cascade channels. We first simulated the transonic wet-steam flows through a Bakhtar's turbine cascade channel under wind-tunnel conditions with inlet wetness. We then predicted the effects of inlet wetness on the moist-air flows expected through an aircraft engine and an industrial gas turbine. For this purpose, we simulated the transonic moist-air flows through a transonic compressor cascade channel while changing the inlet wetness conditions. In both wet-stream and moist-air flows, the inlet wetness was quite sensitive to the growth and evaporation rates of the water droplets, and greatly influenced the shock location. Our results for moist-air flows suggest that the temperature beyond the shock is effectively decreased by a large number density of smaller water droplets.

Original languageEnglish
Pages (from-to)720-732
Number of pages13
JournalInternational Journal of Heat and Mass Transfer
Volume119
DOIs
Publication statusPublished - 2018 Apr

Keywords

  • Compressor
  • Condensation
  • Evaporation
  • Inlet wetness
  • Moist-air flow
  • Transonic flow
  • Turbine
  • Wet-steam flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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