Analysis of coupled flow and heat transfer in primary and secondary sides of helical coil Once-through steam generator

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Fayu Liu
  • Xiaoying Zhang
  • Jiayue Chen
  • Huandong Chen
  • Yuan Yuan

Related Research Unit(s)


Original languageEnglish
Article number108069
Journal / PublicationAnnals of Nuclear Energy
Online published28 Dec 2020
Publication statusPublished - Apr 2021


To examine the thermo-hydraulic characteristics of the primary and secondary sides of a helical tube once-through steam generator (HCOTSG) under steady state conditions, a one-dimensional primary and secondary side heat balance calculation model is established. The accuracy of the numerical simulation is verified by a comparison with the results of a RELAP5 program. The thermo-hydraulic parameters of HCOTSGs are obtained using the calculation program. To study the detailed flow and heat transfer characteristics in helical tubes, a CFD simulation model of HCOTSGs secondary side is established. The velocity and temperature distributions of the fluid in the cross section of the helical tube are nonuniform. The temperature of the fluid inside the helix is higher than that outside the helix. The velocity of the fluid inside the helix is lower than that outside the helix. The fluid inside the helix begins to boil before that outside the helix.

Research Area(s)

  • CFD simulation, Helical coil once-through steam generator, Primary and secondary side coupling, Thermo-hydraulic characteristics