PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle

Nolan Goth; Philip Jones; Thien Duy Nguyen; Rodolfo Vaghetto; Yassin Hassan; Nathaniel Salpeter; Elia Merzari

doi:10.1016/j.ijheatfluidflow.2018.03.021

PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle

Nolan Goth, Philip Jones, Thien Duy Nguyen, Rodolfo Vaghetto, Yassin Hassan, Nathaniel Salpeter, Elia Merzari

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

62 Scopus citations

Abstract

This study summarizes the experimental effort to characterize the flow fields of various interior subchannels in a 61-pin wire-wrapped hexagonal fuel bundle prototypical for a sodium fast reactor. The objective was to generate high spatiotemporal velocity field data for computational fluid dynamics turbulence model validation. The experimental facility employed the matched-index-of-refraction and modern laser-based optical measurement techniques. It is the largest transparent hexagonal test fuel assembly. Measurements were performed in two planes parallel to the axial flow, Interior-1 and Center-2. The Interior-1 location captured fluid interactions in four narrower subchannels formed by the exterior row of pins near the hexagonal duct wall. The Center-2 location captured fluid interactions in two wider subchannels spanning from the center pin out to the hexagonal duct wall. All measurements have been performed at a Reynolds number of 19,000. Results include discussion about statistical convergence of the dataset, along with flow statistics such as ensemble-averaged velocity, root-mean-square fluctuating velocity, Reynolds stress, and integral length scales.

Original language	English
Pages (from-to)	295-304
Number of pages	10
Journal	International Journal of Heat and Fluid Flow
Volume	71
DOIs	https://doi.org/10.1016/j.ijheatfluidflow.2018.03.021
State	Published - Jun 2018
Externally published	Yes

Funding

This material is based upon work supported by the U.S. Department of Energy under Award Numbers DE-NE0008321 and DE-NE0008652 . The experimental flow facility was designed and constructed under DE-NE0008321 with technical collaboration from Areva, Argonne National Laboratory, and TerraPower. Data analysis has been performed under DE-NE0008652. Special thanks go out to Dr. Brian Jackson for his technical feedback and recommendations throughout the course of this work.

Funders	Funder number
U.S. Department of Energy	DE-NE0008652, DE-NE0008321

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10.1016/j.ijheatfluidflow.2018.03.021

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title = "PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle",

abstract = "This study summarizes the experimental effort to characterize the flow fields of various interior subchannels in a 61-pin wire-wrapped hexagonal fuel bundle prototypical for a sodium fast reactor. The objective was to generate high spatiotemporal velocity field data for computational fluid dynamics turbulence model validation. The experimental facility employed the matched-index-of-refraction and modern laser-based optical measurement techniques. It is the largest transparent hexagonal test fuel assembly. Measurements were performed in two planes parallel to the axial flow, Interior-1 and Center-2. The Interior-1 location captured fluid interactions in four narrower subchannels formed by the exterior row of pins near the hexagonal duct wall. The Center-2 location captured fluid interactions in two wider subchannels spanning from the center pin out to the hexagonal duct wall. All measurements have been performed at a Reynolds number of 19,000. Results include discussion about statistical convergence of the dataset, along with flow statistics such as ensemble-averaged velocity, root-mean-square fluctuating velocity, Reynolds stress, and integral length scales.",

author = "Nolan Goth and Philip Jones and {Duy Nguyen}, Thien and Rodolfo Vaghetto and Yassin Hassan and Nathaniel Salpeter and Elia Merzari",

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AU - Goth, Nolan

AU - Jones, Philip

AU - Duy Nguyen, Thien

AU - Vaghetto, Rodolfo

AU - Hassan, Yassin

AU - Salpeter, Nathaniel

AU - Merzari, Elia

PY - 2018/6

Y1 - 2018/6

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AB - This study summarizes the experimental effort to characterize the flow fields of various interior subchannels in a 61-pin wire-wrapped hexagonal fuel bundle prototypical for a sodium fast reactor. The objective was to generate high spatiotemporal velocity field data for computational fluid dynamics turbulence model validation. The experimental facility employed the matched-index-of-refraction and modern laser-based optical measurement techniques. It is the largest transparent hexagonal test fuel assembly. Measurements were performed in two planes parallel to the axial flow, Interior-1 and Center-2. The Interior-1 location captured fluid interactions in four narrower subchannels formed by the exterior row of pins near the hexagonal duct wall. The Center-2 location captured fluid interactions in two wider subchannels spanning from the center pin out to the hexagonal duct wall. All measurements have been performed at a Reynolds number of 19,000. Results include discussion about statistical convergence of the dataset, along with flow statistics such as ensemble-averaged velocity, root-mean-square fluctuating velocity, Reynolds stress, and integral length scales.

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JO - International Journal of Heat and Fluid Flow

JF - International Journal of Heat and Fluid Flow

ER -

PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle

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