Experiment-Based Verification of the SAFR/V1 Module of the EVKLID/V2 Integral Code for Thermal Breakdown of Fuel Pins in a Fast Reactor

Usov, E. V.; Butov, A. A.; Chukhno, V. I.; Klimonov, I. A.; Kudashov, I. G.; Zhdanov, V. S.; Прибатурин, Н. А.; Mosunova, N. A.; Strizhov, V. F.

doi:10.1007/s10512-018-0412-7

Cited by 12 publications

(4 citation statements)

References 4 publications

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“…Simulation methods were developed to simulate severe accidents with core degradation in fast reactors with different fuel types (oxide, metallic and nitride) and different liquid metal coolant (sodium and lead). These methods were implemented in the SAFR module [2][3][4], being the part of the EUCLID/V2 coupled code [1]. To simulate melt relocation the system of the mass, energy and momentum equation is used:…”

Section: The Basic Model To Simulate Thermal Destruction Of the Fuel Pinmentioning

confidence: 99%

“…Using the software module for calculating the destruction of fuel pins [2][3][4], calculations were carried out for two different energy release: uniform along the fuel length and non-uniform (sin(x)law).…”

Section: Fuel Pin Modelmentioning

confidence: 99%

“…To analyze the processes of destruction of the core elements of promising reactors, a universal design code is being developed [1], which includes a module for calculating the destruction of the core and fuel elements (fuel elements) [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The module for calculating the destruction of fuel elements is intended for calculating the problems of modeling the melting of fuel elements in fast reactors. The problem of thermal destruction of a fuel element is complex; to simplify calculations, it is divided into two subtasks: the thermal problem during melting / solidification and the problem of dripping over the surface of a fuel element [2,4].…”

Section: Introductionmentioning

confidence: 99%

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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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