TY - JOUR
T1 - Simulation of Boiling Two-Phase Flow in a Helical Coil Steam Generator Using the Spectral Element Code Nek-2P
AU - Shaver, Dillon R.
AU - Salpeter, Nate
AU - Tomboulides, Ananias
AU - Vegendla, Prasad
AU - Tentner, Adrian
AU - Pointer, W. David
AU - Merzari, Elia
N1 - Funding Information:
The authors gratefully acknowledge use of the computing resources provided on Blues and Bebop, high-performance computing clusters operated by the Laboratory Computing Resource Center at Argonne National Laboratory. The manuscript was created by UChicago Argonne, LLC, operator of Argonne National Laboratory. Argonne National Laboratory, a U.S. Department of Energy (DOE) Office of Science laboratory, is operated under contract DE-AC02-06CH11357. The U.S. government retains for itself, and others acting on its behalf, a paid-up, nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the government. This work was funded by the DOE’s Nuclear Energy Advanced Modeling and Simulation (NEAMS) program.
Funding Information:
The authors gratefully acknowledge use of the computing resources provided on Blues and Bebop, high-performance computing clusters operated by the Laboratory Computing Resource Center at Argonne National Laboratory. The manuscript was created by UChicago Argonne, LLC, operator of Argonne National Laboratory. Argonne National Laboratory, a U.S. Department of Energy (DOE) Office of Science laboratory, is operated under contract DE-AC02-06CH11357. The U.S. government retains for itself, and others acting on its behalf, a paid-up, nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the government. This work was funded by the DOE?s Nuclear Energy Advanced Modeling and Simulation (NEAMS) program.
Publisher Copyright:
© 2019, © 2019 American Nuclear Society/UChicago Argonne, LLC, Operator of Argonne National Laboratory.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - To enable the design of a light water small modular reactor, the boiling flow inside a helical coil steam generator has been simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. Models for the drag, lift, and turbulent dispersion forces are included. The complete model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor, or any combination thereof. The closure models and their implementation in Nek-2P have been validated by comparing to experimental data for a boiling flow, demonstrating excellent agreement. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.
AB - To enable the design of a light water small modular reactor, the boiling flow inside a helical coil steam generator has been simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. Models for the drag, lift, and turbulent dispersion forces are included. The complete model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor, or any combination thereof. The closure models and their implementation in Nek-2P have been validated by comparing to experimental data for a boiling flow, demonstrating excellent agreement. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.
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U2 - 10.1080/00295450.2019.1664199
DO - 10.1080/00295450.2019.1664199
M3 - Article
AN - SCOPUS:85076415326
SN - 0029-5450
VL - 206
SP - 375
EP - 387
JO - Nuclear Technology
JF - Nuclear Technology
IS - 2
ER -