Numerical Simulation of Thermal–Hydraulic Processes in Liquid-Metal Cooled Fuel Assemblies in the Anisotropic Porous Body Approximation

Korsun, A. S.; Merinov, I. G.; Kharitonov, V. S.; Bayaskhalanov, M. V.; Chudanov, V. V.; Aksenova, A. E.; Pervichko, V. A.

doi:10.1134/s0040601519040049

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…Studies have been underway in this country to simulate fuel assemblies and the reactor as the whole. In (Korsun et al 2012), a calculation is presented for the BREST reactor core based on a porous body model using the APMod software module, and a cross verification with the CONV-3D DNS (Direct Numerical Simulation) code is provided.…”

Section: Introductionmentioning

confidence: 99%

Development of a methodological approach for the computational investigation of the coolant flow in the process of the sodium cooled reactor cooldown

Didenko¹,

Baluyev²,

Nikanorov³

et al. 2021

NUCET

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A methodological approach has been developed for the computational investigation of the thermal-hydraulic processes taking place in a sodium cooled fast neutron reactor based on a Russian computational fluid dynamics code, FlowVision. The approach takes into account the integral layout of the reactor primary circuit equipment and the peculiarities of heat exchange in the liquid metal coolant, and makes it possible to model, using well-defined simplifications, the heat and mass exchange in the process of the coolant flowing through the reactor core, and the reactor heat-exchange equipment. Specifically, the methodological approach can be used for justification of safety during the reactor cooldown, as well as for other computational studies which require simulation of the integral reactor core and heat-exchange equipment. The paper presents a brief overview of the methodological approaches developed earlier to study the liquid metal cooled reactor cooldown processes. General principles of these approaches, as well as their advantages and drawbacks have been identified. A three-dimensional computational model of an advanced reactor has been developed, including one heat-exchange loop (a fourth part of the reactor). It has been demonstrated that the FlowVision gap model can be applied to model the space between the reactor core fuel assemblies (interwrapper space), and a porous skeleton model can be used to model the reactor’s heat-exchange equipment. It has been shown that the developed methodological approach is applicable to solving problems of the coolant flow in different operating modes of liquid metal cooled reactor facilities.

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Section: Introductionmentioning

confidence: 99%

Development of a methodological approach for the computational investigation of the coolant flow in the process of the sodium cooled reactor cooldown

Didenko¹,

Baluyev²,

Nikanorov³

et al. 2021

NUCET

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“…Some devices use porous metals as turbulators of heat carrier flows. In this case, the porous material is used as a coating for heat transfer surfaces [17,18]. There are also constructions in which the interchannel spaces for coolant flow are filled with porous metal, which serves as a means for intensifying heat transfer [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems

et al. 2020

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The creation of efficient and compact heat exchangers is one of the priority tasks arising during the design of heat and gas supply to industrial and residential buildings. As a rule, finned surfaces and turbulization of heat carrier flows are used to increase the efficiency of heat exchange in heat exchangers. The present paper proposes to use novel materials, namely porous material, in the design of highly efficient heat exchangers. The investigation was carried out experimentally and theoretically. To study the possibility of creating such heat exchangers, a multi-purpose test bench is created. The aim of the study was to assess the intensity of heat transfer in heat exchangers using porous metal. Laboratory tests are carried out as part of the experimental study. In the theoretical study, the classical equation for the change in the heat flux density when the coolant passes through the porous insert was used. As a result, a mathematical model was obtained in the form of a second-order differential equation. Boundary conditions were set and a particular solution was obtained. The results of theoretical calculations were compared with experimental data. The performed study experimentally confirmed the efficiency of using porous metal inserts in the design of shell-and-tube heat exchangers. The compiled mathematical model allows one to perform engineering calculations of the considered heat exchangers with porous inserts.

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“…Porous heat-conducting materials made of powdered aluminum, copper and other materials make it possible to create new efficient and compact heat exchangers [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The use of porous metals in the design of heat exchangers to increase the intensity of heat exchange

2020

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Heat exchangers are widely used in heat supply systems. To increase the efficiency of heat supply systems, heat exchangers with porous metals are proposed to design. There was a test facility set up to study new types of heat exchangers. The countercurrent flow of heat carriers was activated in those heat exchangers. Freon moved through the heat exchanger pores, and water moved through the inner tubes. It should be noted that the porous materials in the heat exchangers differed in the coefficient of porosity. To be compared, one of the heat exchangers did not contain any porous material. The first test cycle proved the feasibility of using porous metals in heat exchange equipment. Afterwards, a simplified mathematical model of the heat exchanger was compiled. Such an analytical form makes a solution convenient for engineering calculations. Numerical calculations based on this model were compared with the experimental data. Heat transfer intensity of materials with different porosity was compared.

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Numerical Simulation of Thermal–Hydraulic Processes in Liquid-Metal Cooled Fuel Assemblies in the Anisotropic Porous Body Approximation

Cited by 7 publications

References 7 publications

Development of a methodological approach for the computational investigation of the coolant flow in the process of the sodium cooled reactor cooldown

Development of a methodological approach for the computational investigation of the coolant flow in the process of the sodium cooled reactor cooldown

Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems

The use of porous metals in the design of heat exchangers to increase the intensity of heat exchange

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