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Title: Computational fluid dynamics modeling of two-phase flow in a BWR fuel assembly. Final CRADA Report.

Abstract

A direct numerical simulation capability for two-phase flows with heat transfer in complex geometries can considerably reduce the hardware development cycle, facilitate the optimization and reduce the costs of testing of various industrial facilities, such as nuclear power plants, steam generators, steam condensers, liquid cooling systems, heat exchangers, distillers, and boilers. Specifically, the phenomena occurring in a two-phase coolant flow in a BWR (Boiling Water Reactor) fuel assembly include coolant phase changes and multiple flow regimes which directly influence the coolant interaction with fuel assembly and, ultimately, the reactor performance. Traditionally, the best analysis tools for this purpose of two-phase flow phenomena inside the BWR fuel assembly have been the sub-channel codes. However, the resolution of these codes is too coarse for analyzing the detailed intra-assembly flow patterns, such as flow around a spacer element. Advanced CFD (Computational Fluid Dynamics) codes provide a potential for detailed 3D simulations of coolant flow inside a fuel assembly, including flow around a spacer element using more fundamental physical models of flow regimes and phase interactions than sub-channel codes. Such models can extend the code applicability to a wider range of situations, which is highly important for increasing the efficiency and to prevent accidents.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
967950
Report Number(s):
ANL/NE-C0202101
TRN: US0904563
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Technical Report
Country of Publication:
United States
Language:
ENGLISH
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ACCIDENTS; BOILERS; BOILING; COMPUTERIZED SIMULATION; COOLANTS; COOLING SYSTEMS; EFFICIENCY; FLUID MECHANICS; HEAT EXCHANGERS; HEAT TRANSFER; NUCLEAR POWER PLANTS; OPTIMIZATION; RESOLUTION; SPACERS; STEAM CONDENSERS; STEAM GENERATORS; TESTING; TWO-PHASE FLOW

Citation Formats

Tentner, A, and Nuclear Engineering Division. Computational fluid dynamics modeling of two-phase flow in a BWR fuel assembly. Final CRADA Report.. United States: N. p., 2009. Web. doi:10.2172/967950.
Tentner, A, & Nuclear Engineering Division. Computational fluid dynamics modeling of two-phase flow in a BWR fuel assembly. Final CRADA Report.. United States. doi:10.2172/967950.
Tentner, A, and Nuclear Engineering Division. Tue . "Computational fluid dynamics modeling of two-phase flow in a BWR fuel assembly. Final CRADA Report.". United States. doi:10.2172/967950. https://www.osti.gov/servlets/purl/967950.
@article{osti_967950,
title = {Computational fluid dynamics modeling of two-phase flow in a BWR fuel assembly. Final CRADA Report.},
author = {Tentner, A and Nuclear Engineering Division},
abstractNote = {A direct numerical simulation capability for two-phase flows with heat transfer in complex geometries can considerably reduce the hardware development cycle, facilitate the optimization and reduce the costs of testing of various industrial facilities, such as nuclear power plants, steam generators, steam condensers, liquid cooling systems, heat exchangers, distillers, and boilers. Specifically, the phenomena occurring in a two-phase coolant flow in a BWR (Boiling Water Reactor) fuel assembly include coolant phase changes and multiple flow regimes which directly influence the coolant interaction with fuel assembly and, ultimately, the reactor performance. Traditionally, the best analysis tools for this purpose of two-phase flow phenomena inside the BWR fuel assembly have been the sub-channel codes. However, the resolution of these codes is too coarse for analyzing the detailed intra-assembly flow patterns, such as flow around a spacer element. Advanced CFD (Computational Fluid Dynamics) codes provide a potential for detailed 3D simulations of coolant flow inside a fuel assembly, including flow around a spacer element using more fundamental physical models of flow regimes and phase interactions than sub-channel codes. Such models can extend the code applicability to a wider range of situations, which is highly important for increasing the efficiency and to prevent accidents.},
doi = {10.2172/967950},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 13 00:00:00 EDT 2009},
month = {Tue Oct 13 00:00:00 EDT 2009}
}

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