Numerical investigation of the vortex generator’s effect on the onset of heat transfer deterioration in a vertical pipe flows of water at supercritical pressure

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)33_Other conference paper

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Detail(s)

Original languageEnglish
Publication statusPresented - 13 Mar 2019

Conference

Title9th International Symposium on Supercritical-Water-Cooled Reactors (ISSCWR-9)
LocationVancouver Marriott Pinnacle Downtown
PlaceCanada
CityVancouver
Period10 - 14 March 2019

Abstract

Supercritical fluid heat transfer behaviour is unique due to the significant variation of the thermo-physical properties of the fluids around the pseudo-critical temperature. Aiming at exploring the effect of vortex generators on the onset of heat transfer deterioration (HTD) of supercritical fluid, numerical study on supercritical water flowing upward in a circular pipe with vortex generators (VG) has been carried out for boundary conditions within ranges that correspond to the onset of HTD. The numerical calculations were first assessed with experimental results found in literature for conditions where HTD occurs in smooth channel. Next, the model was used to perform calculations with different values of heat fluxes, mass fluxes and inlet temperatures for channel with VG. The result shows that VG affects onset of HTD. The mechanisms of this heat transfer behavior have been explored and reasonable explanations have been proposed.

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Information for this record is supplemented by the author(s) concerned.

Citation Format(s)

Numerical investigation of the vortex generator’s effect on the onset of heat transfer deterioration in a vertical pipe flows of water at supercritical pressure. / Eze, Chika; Zhao, Jiyun.

2019. 9th International Symposium on Supercritical-Water-Cooled Reactors (ISSCWR-9), Vancouver, Canada.

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)33_Other conference paper