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Velocity measurements in convective boiling flow using radioactive particle tracking technique
Author(s) -
Yadav Ashutosh,
Pant Harish Jagat,
Roy Shantanu
Publication year - 2020
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16782
Subject(s) - boiling , tracking (education) , context (archaeology) , mechanics , turbulence , flow (mathematics) , convection , particle (ecology) , boiling water reactor , computational fluid dynamics , hydraulics , nuclear reactor , chemistry , nuclear engineering , thermodynamics , engineering , physics , geology , psychology , paleontology , pedagogy , oceanography
Abstract The design, performance, and safety analysis of nuclear reactors, in particular boiling water reactors, requires information about the vapor–liquid flow dynamics. Such data are necessary for stand‐alone analysis of the thermal hydraulics, as well as to serve as a database for validation of computational fluid dynamics models. Challenges in collecting such data are magnified in the context of flow boiling, which is known to be a complex, multi‐scale problem. The present work focuses on investigating the two‐phase flow dynamics of convective boiling flows on a test section equipped with different heater rods arrangements. Noninvasive radioactive particle tracking (RPT) has been used for measuring liquid velocity field, mean flow patterns, and turbulent kinetic energy of the liquid phase. A novel tracer particle reconstruction algorithm based on support vector regression has been applied in this study. This is the first application of RPT for measuring liquid velocity fields in convective boiling flows.