Subcooled Flow Boiling Experiment and Simulation for a Virtual Reactor
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
D9-2 CASL – Thermalhydraulics Activities in the Consortium for Advanced Simulation of LWRs

Masahiro Kawaji (City College of New York)
Randy Samaroo (City College of New York)
Joseph Kreynin (City College of New York)
Taehun Lee (City College of New York)
Sanjoy Banerjee (City College of New York)


Subcooled flow boiling experiments and numerical simulations using a Lattice Boltzmann model will

be performed at City College of New York as part of the DOE Nuclear HUB project, Consortium for

Advanced Simulation of Light Water Reactors (CASL). The experiments being performed include pool

boiling from a platinum wire, subcooled flow boiling in a vertical tube and single air bubble injection

into a turbulent water stream. Preliminary experiments have been performed to measure the bubble

size, shape and motion in an adiabatic experiment involving air bubble injection into water flowing in a

vertical annulus, as well as PIV measurements of liquid flow field in a subcooled flow boiling

experiment. An advanced thermal Finite Element Lattice Boltzmann Model is being developed to

predict the pool and flow boiling experiments. After the validation of the code, improved constitutive

relations for subcooled flow boiling will be developed for use in 3-D CFD models. The present work is

expected to contribute to the development of a multi-scale, multi-physics model of a PWR in the CASL


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