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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
A General Thermal Equilibrium Discharge Flow Model
Author(s)
Minfu Zhao, Dongxu Zhang and Yufeng Lv
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DOI:10.17265/1934-8975/2016.07.002
Affiliation(s)
Department of Reactor Engineering Technology, China Institute of Atomic Energy, Beijing 102413, China
ABSTRACT
Based on isentropic flow
and thermal equilibrium assumptions, a model was derived to calculate discharge
flow rate, which unified the rules of room temperature water discharge, high
temperature and high pressure water discharge, two-phase critical flow,
saturated steam and superheated steam critical flow, and gave a method to
calculate critical condition. Because of the influence of friction, the entropy
is increased in the actual discharge process, and the discharge flow rate in thermal
equilibrium condition can be obtained by the original model multiplied by an
appropriate correction coefficient. The model calculated results agreed well
with the experiment data of long nozzle critical flow.
KEYWORDS
Thermal equilibrium, critical flow, discharge flow rate.
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