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A PROPOSED CORRELATION FOR CRITICAL FLOW RATE OF WATER FLOW

  • KIM, YEON-SIK (Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute)
  • Received : 2014.06.12
  • Accepted : 2014.11.17
  • Published : 2015.02.25

Abstract

A new correlation predicting the idealized critical mass-flow rates of water for subcooled and saturated liquid water including two-phase water flow was developed for a wide range of upstream stagnation pressures (e.g., 0.5-20.0 MPa). A choking correction factor dependent on the upstream stagnation pressure and subcooled temperature was introduced into a new correlation, and its values were suggested to satisfy the idealized nozzle data within 10% error ranges. The suggested correlation will be instructive and helpful for related studies and/or engineering works.

Acknowledgement

Supported by : Pusan National University

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