Improvement of the condensation heat transfer model of the MARS-KS1.3 code using a modified diffusion layer model

Lee, Jun Yeob; Jeong, Jae Jun; Kang, Jinhoon; Yun, Byong-Jo

doi:10.1016/j.pnucene.2018.06.004

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…Lee et al [18] proposed a modified diffusion layer model with an effective diffusion coefficient combining a molecular diffusion coefficient and the turbulent diffusion coefficient. They validated the modified diffusion layer model by using 157 condensation experiments from six different facilities and found good agreement with data.…”

Section: 4mentioning

confidence: 99%

Condensation Heat Transfer for Downward Flows of Steam-Air Mixture in a Circular Pipe

Murase¹,

Utanohara²,

Hosokawa

et al. 2020

JAPANESE JOURNAL OF MULTIPHASE FLOW

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In our previous study, we measured the radial and axial temperature distributions of steam-air mixture in a vertical circular pipe (diameter, 49.5 mm; cooling height, 610 mm) and the cooling water in the annulus gap (8.5 mm) outside the pipe, and the temperature gradients in the pipe wall (thickness, 5.5 mm) between the steam-air mixture and cooling water. From the temperatures, we evaluated condensation heat fluxes qc, and derived an empirical correlation. In this study, we have calculated the heat transfer coefficient of the condensate film hf with the Nusselt equation and evaluated the condensation heat transfer coefficient hc from qc and the measured temperature distributions. We also compared hc with hc correlations based on the heat and mass transfer analogy and the diffusion layer model. Results from both correlations agreed relatively well with the hc data, but the correlations underestimated hc for high hc near the inlet with a thin thermal boundary layer and overestimated hc for low hc.

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Section: 4mentioning

confidence: 99%

Condensation Heat Transfer for Downward Flows of Steam-Air Mixture in a Circular Pipe

Murase¹,

Utanohara²,

Hosokawa

et al. 2020

JAPANESE JOURNAL OF MULTIPHASE FLOW

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show abstract

“…Kageyama et al [9] present the calculation method in detail for film condensation in vertical tubes. In the case of system codes, this approach has been used for example for the thermal-hydraulic in the containment modelling with MELCOR [10] or MARS [11]Error! Reference source not found..…”

Section: Introductionmentioning

confidence: 99%

Interfacial heat transfer with non-condensable gas in ASTEC V2.2: Application to severe accidents study during PWR cold shutdown states

Zambaux

Laborde

2023

Nuclear Engineering and Design

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Modifications of the turbulent diffusion layer model for the condensation heat transfer under the presence of noncondensable gases

Lee

Jeong

Yun

2020

Annals of Nuclear Energy

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Improvement of the condensation heat transfer model of the MARS-KS1.3 code using a modified diffusion layer model

Cited by 7 publications

References 25 publications

Condensation Heat Transfer for Downward Flows of Steam-Air Mixture in a Circular Pipe

Condensation Heat Transfer for Downward Flows of Steam-Air Mixture in a Circular Pipe

Interfacial heat transfer with non-condensable gas in ASTEC V2.2: Application to severe accidents study during PWR cold shutdown states

Modifications of the turbulent diffusion layer model for the condensation heat transfer under the presence of noncondensable gases

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