Experimental and numerical determination of the rate of mass loss and temperature evolution of the single fuel rod cladding imitator during its melting

Лобанов, П. Д.; Zhdanov, V. S.; Usov, E. V.; Svetonosov, A. I.; Klimonov, I. A.

doi:10.1016/j.nucengdes.2020.110681

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…where  is the specific heat for UO2, The results of the simulation of the mass loss are presented in Figure 3. The results of the calculation with uniform heat release are in a good agreement with the real experimental data [8][9]. With a non-uniform heat release, the substance melts non-simultaneously.…”

Section: Fuel Pin Modelsupporting

confidence: 78%

Analysis of different factors on the features of thermal destruction of a fuel pin

Usov

Saikina

Chuhno

2021

J. Phys.: Conf. Ser.

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The presented work studies the influence of various factors that affect the specific features of fuel pins melting. For this purpose, fuel pins with different geometries and energy release are considered. Numerical simulation of melting is carried out using a program module for calculating the destruction of fuel rods. Comparison with theoretical calculations is made. The analysis of the convergence of calculations with respect to the time step value and the number of calculated cells along the radius and height is carried out. As a result of work with the use of numerical methods, the characteristic times of destruction of fuel elements during an accident with a loss of coolant flow rate (an accident of the ULOF type) and the dependence of weight loss on time are obtained under various conditions.

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Section: Fuel Pin Modelsupporting

confidence: 78%

Analysis of different factors on the features of thermal destruction of a fuel pin

Usov

Saikina

Chuhno

2021

J. Phys.: Conf. Ser.

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Research on the nuclear fuel rods melting behaviors by alternative material experiments

Tian

Chen

et al. 2022

Journal of Nuclear Materials

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Analysis of the cladding melt relocation along the surface of the fuel pin with help of the SAFR module

Usov

Лобанов

Klimonov

et al. 2021

J. Phys.: Conf. Ser.

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The presented work is dedicated to the development of approaches to simulate cladding melt relocation along the surface of the fuel pin. Development of the approaches is based on the results of the experiments carried out at the NSI RAS and IT SB RAS. Features of the melt relocation are studied in the experiments. It is demonstrated that the laminar film flow regime in the heated part of the fuel simulator is the main flow regime. Model of the melt relocation is constructed. This model is the part of the SAFR module of the EUCLID/V2 coupled code. It is shown that the proposed approaches allow simulating the melt relocation with good accuracy.

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Experimental and numerical determination of the rate of mass loss and temperature evolution of the single fuel rod cladding imitator during its melting

Cited by 4 publications

References 27 publications

Analysis of different factors on the features of thermal destruction of a fuel pin

Analysis of different factors on the features of thermal destruction of a fuel pin

Research on the nuclear fuel rods melting behaviors by alternative material experiments

Analysis of the cladding melt relocation along the surface of the fuel pin with help of the SAFR module

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