Thermo-hydraulic characteristics of hybrid mixing vanes in a 17×17 nuclear rod bundle

Cheol Min Lee; Jeong Soo An; Young Don Choi

doi:10.1007/BF03179043

Thermo-hydraulic characteristics of hybrid mixing vanes in a 17×17 nuclear rod bundle

Cheol Min Lee, Jeong Soo An, Young Don Choi

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The lateral flow in the sub-channel of a nuclear rod bundle increase turbulent mixing and enhance heat transfer rate and safety. Various types of mixing vanes have been investigated to produce more lateral flow. In this study, the thermal-hydraulic characteristics of Hybrid mixing vane in a 17×17 rod bundle were calculated. Hybrid mixing vane has bended root part and split stem part. The computation was performed using a supercomputer due to the high number of grid meshes. The characteristics of Hybrid mixing vane were compared to Split mixing vane. The Hybrid mixing vane showed higher values of secondary intensity, cross-sectional turbulence intensity and Nu number and lower values of maximum temperature and standard deviation of temperature. Meanwhile, The Hybrid mixing vane has higher invariance because small vortexes travel, stretch and are connected with main stream.

Original language	English
Pages (from-to)	1263-1270
Number of pages	8
Journal	Journal of Mechanical Science and Technology
Volume	21
Issue number	8
DOIs	https://doi.org/10.1007/BF03179043
Publication status	Published - 2007 Aug

Bibliographical note

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

Hybrid mixing vane
Nuclear fuel rod bundle
Split mixing vane
Subchannel

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering

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10.1007/BF03179043

Cite this

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abstract = "The lateral flow in the sub-channel of a nuclear rod bundle increase turbulent mixing and enhance heat transfer rate and safety. Various types of mixing vanes have been investigated to produce more lateral flow. In this study, the thermal-hydraulic characteristics of Hybrid mixing vane in a 17×17 rod bundle were calculated. Hybrid mixing vane has bended root part and split stem part. The computation was performed using a supercomputer due to the high number of grid meshes. The characteristics of Hybrid mixing vane were compared to Split mixing vane. The Hybrid mixing vane showed higher values of secondary intensity, cross-sectional turbulence intensity and Nu number and lower values of maximum temperature and standard deviation of temperature. Meanwhile, The Hybrid mixing vane has higher invariance because small vortexes travel, stretch and are connected with main stream.",

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AB - The lateral flow in the sub-channel of a nuclear rod bundle increase turbulent mixing and enhance heat transfer rate and safety. Various types of mixing vanes have been investigated to produce more lateral flow. In this study, the thermal-hydraulic characteristics of Hybrid mixing vane in a 17×17 rod bundle were calculated. Hybrid mixing vane has bended root part and split stem part. The computation was performed using a supercomputer due to the high number of grid meshes. The characteristics of Hybrid mixing vane were compared to Split mixing vane. The Hybrid mixing vane showed higher values of secondary intensity, cross-sectional turbulence intensity and Nu number and lower values of maximum temperature and standard deviation of temperature. Meanwhile, The Hybrid mixing vane has higher invariance because small vortexes travel, stretch and are connected with main stream.

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Thermo-hydraulic characteristics of hybrid mixing vanes in a 17×17 nuclear rod bundle

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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