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Title: On the multidimensional modeling of fluid flow and heat transfer in SCWRS

Abstract

The Supercritical Water Reactor (SCWR) has been proposed as one of the six Generation IV reactor design concepts under consideration. The key feature of the SCWR is that water at supercritical pressures is used as the reactor coolant. Although at such pressures, fluids do not undergo phase change as they are heated, the fluid properties experience dramatic variations throughout what is known as the pseudo-critical region. Highly nonuniform temperature and fluid property distributions are expected in the reactor core, which will have a significant impact on turbulence and heat transfer in future SCWRs. The goal of the present work has been to understand and predict the effects of these fluid property variations on turbulence and heat transfer throughout the reactor core. Spline-type property models have been formulated for water at supercritical pressures in order to include the dependence of properties on both temperature and pressure into a numerical solver. New models of turbulence and heat transfer for variable-property fluids have been developed and implemented into the NPHASE-CMFD software. The results for these models have been compared to experimental data from the Korea Atomic Energy Research Inst. (KAERI) for various heat transfer regimes. It is found that the Low-Reynolds {kappa}-{epsilon} modelmore » performs best at predicting the experimental data. (authors)« less

Authors:
; ;  [1]
  1. Center for Multiphase Research, Rensselaer Polytechnic Inst., 110 8th St., Troy, NY (United States)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22105944
Resource Type:
Conference
Resource Relation:
Conference: ICAPP '12: 2012 International Congress on Advances in Nuclear Power Plants, Chicago, IL (United States), 24-28 Jun 2012; Other Information: Country of input: France; 14 refs.; Related Information: In: Proceedings of the 2012 International Congress on Advances in Nuclear Power Plants - ICAPP '12| 2799 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; COMPUTERIZED SIMULATION; CRITICAL PRESSURE; DESIGN; EXPERIMENTAL DATA; FLUID FLOW; HEAT TRANSFER; HEAT TRANSFER FLUIDS; MANY-DIMENSIONAL CALCULATIONS; N CODES; REACTOR CORES; REPUBLIC OF KOREA; REYNOLDS NUMBER; SUPERCRITICAL STATE; TEMPERATURE DEPENDENCE; TURBULENCE; WATER COOLED REACTORS

Citation Formats

Gallaway, T., Antal, S. P., and Podowski, M. Z. On the multidimensional modeling of fluid flow and heat transfer in SCWRS. United States: N. p., 2012. Web.
Gallaway, T., Antal, S. P., & Podowski, M. Z. On the multidimensional modeling of fluid flow and heat transfer in SCWRS. United States.
Gallaway, T., Antal, S. P., and Podowski, M. Z. 2012. "On the multidimensional modeling of fluid flow and heat transfer in SCWRS". United States.
@article{osti_22105944,
title = {On the multidimensional modeling of fluid flow and heat transfer in SCWRS},
author = {Gallaway, T. and Antal, S. P. and Podowski, M. Z.},
abstractNote = {The Supercritical Water Reactor (SCWR) has been proposed as one of the six Generation IV reactor design concepts under consideration. The key feature of the SCWR is that water at supercritical pressures is used as the reactor coolant. Although at such pressures, fluids do not undergo phase change as they are heated, the fluid properties experience dramatic variations throughout what is known as the pseudo-critical region. Highly nonuniform temperature and fluid property distributions are expected in the reactor core, which will have a significant impact on turbulence and heat transfer in future SCWRs. The goal of the present work has been to understand and predict the effects of these fluid property variations on turbulence and heat transfer throughout the reactor core. Spline-type property models have been formulated for water at supercritical pressures in order to include the dependence of properties on both temperature and pressure into a numerical solver. New models of turbulence and heat transfer for variable-property fluids have been developed and implemented into the NPHASE-CMFD software. The results for these models have been compared to experimental data from the Korea Atomic Energy Research Inst. (KAERI) for various heat transfer regimes. It is found that the Low-Reynolds {kappa}-{epsilon} model performs best at predicting the experimental data. (authors)},
doi = {},
url = {https://www.osti.gov/biblio/22105944}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2012},
month = {Sun Jul 01 00:00:00 EDT 2012}
}

Conference:
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