Evaluation of existing correlations for the prediction of pressure drop in wire-wrapped hexagonal array pin bundles

Chen, S.K.; Todreas, Neil E.; Nguyen, Ngoc

doi:10.1016/j.nucengdes.2013.12.003

Cited by 84 publications

(26 citation statements)

References 19 publications

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“…Among the existing correlations (S.K. Chen et al, 2014) for the prediction of pressure drops in wire-spaced hexagonal array pin bundles, the simplified Cheng-Todreas correlation (S.K. Cheng and N.E.…”

Section: Loop Pressure Dropsmentioning

confidence: 99%

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Post-test simulations for the NACIE-UP benchmark by STH codes

Forgione

Martelli

Barone

et al. 2019

Nuclear Engineering and Design

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Section: Loop Pressure Dropsmentioning

confidence: 99%

“…The friction factor for the wire-wrapped rod bundle has been evaluated with the detailed Cheng and Todreas correlation (Chen et al, 2014). RELAP5-3D have the possibility to insert only two correlations (one for laminar zone and one for turbulent).…”

Section: Figure 11 Nacie-up Nodalization With Relap5-3d Codementioning

confidence: 99%

Post-test simulations for the NACIE-UP benchmark by STH codes

Forgione

Martelli

Barone

et al. 2019

Nuclear Engineering and Design

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“…The bundle flow area, A, and wetted perimeter, P wet , are calculated accounting for the interior, wall, and corner subchannels using the methodology proposed by Cheng et al [20]. Temperaturedependent density and viscosity of p-Cymene were linearly interpolated [26] based on the temperature at the beginning of each pressure measurement.…”

Section: Reynolds Number Estimationmentioning

confidence: 99%

“…The complexity of developing said correlations is primarily due to the wide range of bundle geometric parameters and Reynolds numbers used in various experiments. Cheng et al evaluated a large number of correlations and ranked them according to two figures of merit, the agreement index and credit score [20]. From that evaluation, the four most relevant pressure drop correlations for the experimental bundle of this paper are the CTD, Rehme, Baxi and Dalle Donne (BDD), and Kirillov (KIR).…”

Section: Reference Correlationsmentioning

confidence: 99%

“…A comprehensive review of existing pressure drop experimental data has been conducted by Cheng et al [20] with the objective of evaluate existing pressure drop correlations based on the available test data. Cheng and Todreas identified 132 experimental data sets generated from 80 test bundles, which include the experimental bundles mentioned earlier.…”

Section: Introductionmentioning

confidence: 99%

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Pressure Measurements in a Wire-Wrapped 61-Pin Hexagonal Fuel Bundle

Vaghetto

Jones

Goth

et al. 2017

Journal of Fluids Engineering

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To achieve longer-life liquid-metal fast reactor cores, designers are considering to increase the wall gap of the wire-wrapped hexagonal fuel bundles to account for volumetric void swelling and radiation creep. A new wire-wrapped hexagonal test bundle has been constructed, with a wall gap larger than prior experiments, and experimental pressure drop data have been generated under laminar, transition, and turbulent flow regimes (corresponding to Re of 250–19,000), to complement the existing database of small wall gap experimental bundles. The comparison of the experimental data set with the predictions of four existing correlations (Baxi and Dalle Donne, Cheng and Todreas detailed (CTD), Kirillov, and Rehme) showed general agreement between data and the selected correlations. However, the CTD correlation most accurately predicted the experimental trend and the transition between flow regimes. The analysis of the experimental data also revealed that the larger wall gap size caused a lower bundle pressure drop due to the increased bypass flow area.

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Periodicity and transversal pressure distribution in a Wire‐wrapped 19‐Pin fuel assembly

et al. 2020

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Summary An experimental setup was designed and constructed to investigate the detailed pressure distribution data of a wire‐wrapped fuel assembly and to evaluate the friction factor correlations. The test section was a wire‐wrapped 19‐pin fuel assembly manufactured with polymethyl methacrylate, and the working liquid was deionized water. A secondary circuit supplying chilled water was built to minimize the changes in the physical properties of the working liquid induced by temperature fluctuation. Eighteen axial differential pressure drops and twelve transversal differential pressure drops with Reynolds number in the range of 3750 to 16 250 were measured. The relation between the friction factor and Reynolds number was analyzed. The results showed that the axial pressure in the edge subchannels varied periodically similar to a helical pitch. The direction of rotation and height of the wire‐wrap spacers in the subchannels have a significant effect on the transversal pressure distribution, especially in the zones where the wire‐wrap spacers cross. Besides, the Rehme correlation and Cheng and Todreas Detailed (CTD) correlation showed the best fit with the experimental data. The critical Reynolds number, where the shift from the transitional to turbulent flow regions occurs, is approximately 11 700, and the difference between the experimental data and the value predicted by the CTD correlation was approximately 8.33%. The experimental data of the pressure distribution in the wire‐wrapped fuel assembly could complement the existing database, which supports the development of fast reactors.

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Evaluation of existing correlations for the prediction of pressure drop in wire-wrapped hexagonal array pin bundles

Cited by 84 publications

References 19 publications

Post-test simulations for the NACIE-UP benchmark by STH codes

Post-test simulations for the NACIE-UP benchmark by STH codes

Pressure Measurements in a Wire-Wrapped 61-Pin Hexagonal Fuel Bundle

Periodicity and transversal pressure distribution in a Wire‐wrapped 19‐Pin fuel assembly

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