Effect of stratified interface instability on thermal focusing effect in two-layer corium pool

Ge, Kui; Zhang, Y.P.; Tian, Wenxi; Su, G.H.; Qiu, Suizheng

doi:10.1016/j.ijheatmasstransfer.2018.12.117

Cited by 18 publications

(2 citation statements)

References 21 publications

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“…The model was verified according to the experimental results of COPRA (Ge et al, 2019). The temperature profile vs. pool height (Figure 5) and heat flux distribution along with the polar angle had a good agreement according to the case of NaNO 3 -KNO 3 (20-80%) molten salt experiment data.…”

Section: Verification Of the Modelmentioning

confidence: 54%

“…With the COPRA experimental results, Luo et al (2018) and Luo et al (2019) numerically investigated the behavior of internally heated melt pool with eutectic salt, using the algebraic Wall Modeled LES (WMLES) model for the turbulence modeling, and found power changing will not affect the sideward heat flux significantly, while it had intensive impacts on the crust growth on the curved sidewall with a polar angle below 30 °. Ge et al (2019) numerically studied the effects of stratified interface instability on the thermal focusing effect in a twolayer corium pool, and relevant results can provide a reference for reactor IVR safety analysis and optimization design.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes

et al. 2022

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This study described the natural circulation and heat transfer of a molten pool in a specifically designed core catcher conceived for a pressurized water reactor. In addition to external cooling, the core catcher features internal cooling tubes embedded in the molten pool. To investigate the coolability in such a configuration, first, a full-scale core catcher simulation is conducted to give a preliminary study under a real SA situation. Results illustrated that cooling efficiency can be remarkably enhanced due to the inner tubes. Then a test facility of the 2D slice with the geometrical scaled factor of 1:4 has been developed, and molten salt (NaNO3–KNO3) experiments will be implemented in the near future. This study also performed a pre-test simulation using molten NaNO3–KNO3 as a stimulant to study the heat transfer and flow characteristics of the salt pool. The melt convection in the test section was represented by a two-dimensional mesh with a WMLES turbulence model using the FLUENT code. The simulation captured the heat transfer enhancement by the cooling tubes as expected, and the results would help decide the proper test matrix and improvement of instrumentation required to obtain the necessary data for code validation.

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Section: Verification Of the Modelmentioning

confidence: 54%