Measurement of the Heat Transfer Coefficient for Mercury Flowing in a Narrow Channel

Crye, Jason Michael; Ruggles, A. E.; Pointer, W. David; Felde, D.K.; Jallouk, P.A.; McFee, M.T.; Wendel, M.W.; Yoder, G.L.

doi:10.1115/1.1518500

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…Two sets of typical operating conditions with different Peclet numbers were selected, and the Nusselt numbers calculated using different models were compared. Among them, Nu-cal represents the calculated value of CFD; Nu-exp represents the Nusselt number calculated by the Lubarski and Kaufman relationship, which is highly consistent with the experimental data (Crye et al, 2002); and Nu-J represents the empirical value of the Nusselt number calculated by the relationship of Jaeger et al (2015). The results show that all four models have certain errors in predicting Nu.…”

Section: Evaluation Resultsmentioning

confidence: 60%

“…The applicable range of the model for Pe: 1,200-3,000. Figure 2 shows the comparison of the Nu between that calculated by the CFD implanted the new Pr t model with the experimental data by Crye et al (2002). Figure 3 shows the error between the Nu calculated by the CFD Comparison of Nu between that calculated by the CFD implanted the new Pr t model and the experimental data.…”

Section: A New Local Turbulent Prandtl Number Modelmentioning

confidence: 96%

“…This study will evaluate the existing turbulent Prandtl number models mentioned above. A set of experimental data with a relatively wide range of operating conditions and representative geometric conditions was selected as a reference, which was an experiment conducted by Crye et al (2002) in the United States to measure the heat transfer coefficient of liquid Hg in a narrow rectangular channel. Tables 2 and 3 are the specific channel dimensions and operating conditions.…”

Section: Reference Objectmentioning

confidence: 99%

“…The Reynolds number range was 2,990-102000, the Prandtl number range was 0.0022-0.01, and the Peclet number range was 70-1,200. In 2002, Crye et al (2002 of the United States carried out an experiment to measure the heat transfer coefficient of liquid Hg in a narrow rectangular channel, and the Peclet number range was 750-3,000.…”

Section: Introductionmentioning

confidence: 99%

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Study on the turbulent Prandtl number model for liquid metal flow and heat transfer in a narrow rectangular channel

Xue,

Hongxing,

Jian

et al. 2024

Front. Energy Res.

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In order to improve the core power density of liquid metal reactors, plate-type fuel assemblies are typically used, which have obvious advantages in heat transfer capacity. For the low Prandtl number fluid, the RANS turbulence model-based CFD method needs to be modified by inserting the turbulent Prandtl number model. This paper investigated the turbulent Prandtl number model for the turbulent heat transfer of liquid metal flow in a narrow rectangular channel. First, the existing turbulent Prandtl number models were summarized and classified as the local turbulence Prandtl number model and the global turbulence Prandtl number model. They were evaluated based on the experimental data. The results showed that the prediction results of each model are not ideal. Then, a typical numerical example was used to analyze the temperature field and flow field in the narrow gap of a narrow rectangular channel. It was shown that the entire flow region only includes the near-wall region and the transition region, and the transition region accounts for the main proportion. A semi-empirical local turbulence Prandtl number model was obtained by solving the turbulent transport equation, and the unknown coefficients were determined iteratively with the experimental data. The error was controlled within ±20%. Finally, the applicability of the newly proposed turbulent Prandtl number model was explored, and the results showed that it has good applicability for the different runner sizes and different liquid metal types. This study can provide a reference for the numerical simulation of turbulent heat transfer of metal liquid in the narrow rectangular channel.

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Section: Evaluation Resultsmentioning

confidence: 60%

Section: A New Local Turbulent Prandtl Number Modelmentioning

confidence: 96%

Section: Reference Objectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study on the turbulent Prandtl number model for liquid metal flow and heat transfer in a narrow rectangular channel

Xue,

Hongxing,

Jian

et al. 2024

Front. Energy Res.

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“…Jaeger et al (Jaeger et al, 2015) summarized the flow and heat transfer experiments of the liquid metal in narrow rectangular channels, which are reflected in a review. Research suggests that a aspect ratio of 10 can be used as a boundary for dividing the heat transfer characteristics of narrow rectangular channels, and two empirical formulas for predicting Nu have been proposed, which are applicable to different aspect ratio ranges (Sineath, 1949;Tidball, 1953;Duchatelle and Vautrey, 1964;Crye et al, 2002). Takahashi et al (Takahashi et al, 1998) studied the pressure drop and heat transfer characteristics of lithium single-phase fluid in a simple horizontally heated rectangular channel under a horizontal transverse magnetic field in a lithium cooled magnetic confinement fusion reactor.…”

Section: Introductionmentioning

confidence: 99%

Study on flow and heat transfer characteristics of liquid metal flow in narrow rectangular channels under high heat flux

Zhang,

Feng,

et al. 2024

Front. Energy Res.

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In order to improve the core power density of liquid metal reactors, narrow rectangular fuel assemblies are typically used, which have obvious advantages in heat transfer capacity. However, the flow and heat transfer characteristics in coolant passage need to be studied. In this article, the numerical simulation analysis model obtained earlier was applied to calculate the Nusselt number, friction factor, with different Reynolds number, Prandtl number, or Peclet number of lead bismuth flow in a narrow rectangular channel under high heat flux. A heating correction factor was proposed and a flow resistance model was established for high heat flux. The influencing factors of ultra-high flux reactor core, such as gap size, flow direction, single and double sided heating conditions, on the flow and heat transfer in narrow rectangular channels were explored. The results showed that gap size and aspect ratio have a certain impact on the Nu and f of narrow rectangular channels, but the influence is relatively small within the narrow rectangular channel condition range. The influence of flow direction on flow and heat transfer is minimal, the single and double sided heating conditions will bring about a difference of about 20% in Nu and a difference of about 2.5% in f. In addition, the type of liquid metal will also affect the results. The research can provide reference for the thermal design and optimization of ultra-high flux reactor cores.

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Experimental investigation on heat transfer characteristics of water flow in a narrow annulus

Wang

2008

Applied Thermal Engineering

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Measurement of the Heat Transfer Coefficient for Mercury Flowing in a Narrow Channel

Cited by 7 publications

References 4 publications

Study on the turbulent Prandtl number model for liquid metal flow and heat transfer in a narrow rectangular channel

Study on the turbulent Prandtl number model for liquid metal flow and heat transfer in a narrow rectangular channel

Study on flow and heat transfer characteristics of liquid metal flow in narrow rectangular channels under high heat flux

Experimental investigation on heat transfer characteristics of water flow in a narrow annulus

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