Subchannel analysis and correlation of the Rod Bundle Heat Transfer (RBHT) steam cooling experimental data

Michael Riley, L. Mohanta, D. J. Miller, Fan-bill B. Cheung, S. M. Bajorek, K. Tien, C. L. Hoxie

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A subchannel analysis of the steam cooling data obtained in the Rod Bundle Heat Transfer (RBHT) test facility has been performed in this study to capture the effect of spacer grids on heat transfer. The RBHT test facility has a 7×7 rod bundle with heater rods and with seven spacer grids equally spaced along the length of the rods. A method based on the concept of momentum and heat transport analogy has been developed for calculating the subchannel bulk mean temperature from the measured steam temperatures. Over the range of inlet Reynolds number, the local Nusselt number was found to exhibit a minimum value between the upstream and downstream spacer grids. The presence of a spacer grid not only affects the local Nusselt number downstream of the grid but also affects the local Nusselt number upstream of the next grid. A new correlation capturing the effect of Reynolds number on the local flow restructuring downstream as well as upstream of the spacer grids was proposed for the minimum Nusselt number. In addition, a new enhancement factor accounting for the effects of the upstream as well as downstream spacer grids was developed from the RBHT data. The new enhancement factor was found to compare well with the data from the ACHILLLES test facility.

Original languageEnglish (US)
Pages (from-to)214-220
Number of pages7
JournalKerntechnik
Volume81
Issue number3
DOIs
StatePublished - Jun 1 2016

Fingerprint

Steam
Nusselt number
steam
bundles
rods
Test facilities
heat transfer
grids
spacers
Heat transfer
Cooling
cooling
upstream
Reynolds number
test facilities
Momentum
Temperature
augmentation
heaters
momentum

All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Safety, Risk, Reliability and Quality

Cite this

Riley, Michael ; Mohanta, L. ; Miller, D. J. ; Cheung, Fan-bill B. ; Bajorek, S. M. ; Tien, K. ; Hoxie, C. L. / Subchannel analysis and correlation of the Rod Bundle Heat Transfer (RBHT) steam cooling experimental data. In: Kerntechnik. 2016 ; Vol. 81, No. 3. pp. 214-220.
@article{da8c8fccee66476f950b4e18b8293a00,
title = "Subchannel analysis and correlation of the Rod Bundle Heat Transfer (RBHT) steam cooling experimental data",
abstract = "A subchannel analysis of the steam cooling data obtained in the Rod Bundle Heat Transfer (RBHT) test facility has been performed in this study to capture the effect of spacer grids on heat transfer. The RBHT test facility has a 7×7 rod bundle with heater rods and with seven spacer grids equally spaced along the length of the rods. A method based on the concept of momentum and heat transport analogy has been developed for calculating the subchannel bulk mean temperature from the measured steam temperatures. Over the range of inlet Reynolds number, the local Nusselt number was found to exhibit a minimum value between the upstream and downstream spacer grids. The presence of a spacer grid not only affects the local Nusselt number downstream of the grid but also affects the local Nusselt number upstream of the next grid. A new correlation capturing the effect of Reynolds number on the local flow restructuring downstream as well as upstream of the spacer grids was proposed for the minimum Nusselt number. In addition, a new enhancement factor accounting for the effects of the upstream as well as downstream spacer grids was developed from the RBHT data. The new enhancement factor was found to compare well with the data from the ACHILLLES test facility.",
author = "Michael Riley and L. Mohanta and Miller, {D. J.} and Cheung, {Fan-bill B.} and Bajorek, {S. M.} and K. Tien and Hoxie, {C. L.}",
year = "2016",
month = "6",
day = "1",
doi = "10.3139/124.110740",
language = "English (US)",
volume = "81",
pages = "214--220",
journal = "Kerntechnik",
issn = "0932-3902",
publisher = "Carl Hanser Verlag GmbH & Co. KG",
number = "3",

}

Subchannel analysis and correlation of the Rod Bundle Heat Transfer (RBHT) steam cooling experimental data. / Riley, Michael; Mohanta, L.; Miller, D. J.; Cheung, Fan-bill B.; Bajorek, S. M.; Tien, K.; Hoxie, C. L.

In: Kerntechnik, Vol. 81, No. 3, 01.06.2016, p. 214-220.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Subchannel analysis and correlation of the Rod Bundle Heat Transfer (RBHT) steam cooling experimental data

AU - Riley, Michael

AU - Mohanta, L.

AU - Miller, D. J.

AU - Cheung, Fan-bill B.

AU - Bajorek, S. M.

AU - Tien, K.

AU - Hoxie, C. L.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - A subchannel analysis of the steam cooling data obtained in the Rod Bundle Heat Transfer (RBHT) test facility has been performed in this study to capture the effect of spacer grids on heat transfer. The RBHT test facility has a 7×7 rod bundle with heater rods and with seven spacer grids equally spaced along the length of the rods. A method based on the concept of momentum and heat transport analogy has been developed for calculating the subchannel bulk mean temperature from the measured steam temperatures. Over the range of inlet Reynolds number, the local Nusselt number was found to exhibit a minimum value between the upstream and downstream spacer grids. The presence of a spacer grid not only affects the local Nusselt number downstream of the grid but also affects the local Nusselt number upstream of the next grid. A new correlation capturing the effect of Reynolds number on the local flow restructuring downstream as well as upstream of the spacer grids was proposed for the minimum Nusselt number. In addition, a new enhancement factor accounting for the effects of the upstream as well as downstream spacer grids was developed from the RBHT data. The new enhancement factor was found to compare well with the data from the ACHILLLES test facility.

AB - A subchannel analysis of the steam cooling data obtained in the Rod Bundle Heat Transfer (RBHT) test facility has been performed in this study to capture the effect of spacer grids on heat transfer. The RBHT test facility has a 7×7 rod bundle with heater rods and with seven spacer grids equally spaced along the length of the rods. A method based on the concept of momentum and heat transport analogy has been developed for calculating the subchannel bulk mean temperature from the measured steam temperatures. Over the range of inlet Reynolds number, the local Nusselt number was found to exhibit a minimum value between the upstream and downstream spacer grids. The presence of a spacer grid not only affects the local Nusselt number downstream of the grid but also affects the local Nusselt number upstream of the next grid. A new correlation capturing the effect of Reynolds number on the local flow restructuring downstream as well as upstream of the spacer grids was proposed for the minimum Nusselt number. In addition, a new enhancement factor accounting for the effects of the upstream as well as downstream spacer grids was developed from the RBHT data. The new enhancement factor was found to compare well with the data from the ACHILLLES test facility.

UR - http://www.scopus.com/inward/record.url?scp=85017605083&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017605083&partnerID=8YFLogxK

U2 - 10.3139/124.110740

DO - 10.3139/124.110740

M3 - Article

AN - SCOPUS:85017605083

VL - 81

SP - 214

EP - 220

JO - Kerntechnik

JF - Kerntechnik

SN - 0932-3902

IS - 3

ER -