Optimization of the DC magnetohydrodynamic pump for the Dual Fluid Reactor

Nowak, Mateusz; Spirzewski, Michał; Czerski, K.

doi:10.1016/j.anucene.2022.109142

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…These components are meticulously arranged to fulfill specific functions within the system. Two magneto-hydraulic pumps (MHD) [24,25] are employed to facilitate the circulation of flows within the two loops. This type of pump is a commonly used type in lead and sodium cooled fast reactors [26,27] and molten salt reactors [28,29].…”

Section: Description Of Test Casementioning

confidence: 99%

Numerical Study of Flow and Heat Transfer Characteristics in a Simplified Dual Fluid Reactor

El‐Gendy

Czerski

2023

Energies

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This study presents the design and computational fluid dynamics (CFD) analysis of a mini demonstrator for a dual fluid reactor (DFR). The DFR is a novel concept currently under investigation. The DFR is characterized by the implementation of two distinct liquid loops dedicated to fuel and coolant. It integrates the principles of molten salt reactors and liquid metal cooled reactors; thus, it operates in a high temperature and fast neutron spectrum, presenting a distinct approach in the field of advanced nuclear reactor design. The mini demonstrator serves as a scaled-down version of the actual reactor, primarily aimed at gaining insights into the CFD analysis intricacies of the reactor while minimizing computational costs. The CFD modeling of the MD intends to add valuable data for the purpose of modeling validation against experiments to be conducted on the MD. These experiments can be used for DFR licensing and design optimization. The coolant and fuel utilized in the mini demonstrator are of low Prandtl number (Pr = 0.01) liquid lead, operating at two distinct inlet temperatures, namely 873 K and 1473 K. The study showed a rapid increase in turbulence due to intense mixing and abrupt changes in flow areas and directions, despite the relatively low inlet velocities. Hot spots characterized by elevated temperatures were identified, analyzed, and justified based on their spatial distribution and flow conditions. Flow swirling within pipes was identified and a remedy approach was suggested. Inconsistent mass flow rates were observed among the fuel pipes, with higher rates observed in the lateral pipes. Although lower fuel temperatures were observed in the lateral pipes, they consistently exhibited higher heat exchange characteristics. The study concludes by giving physical insights into the heat transfer and flow behavior, and proposing design considerations for the dual fluid reactor to enhance structural safety and durability, based on the preliminary analysis conducted.

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Section: Description Of Test Casementioning

confidence: 99%

Numerical Study of Flow and Heat Transfer Characteristics in a Simplified Dual Fluid Reactor

El‐Gendy

Czerski

2023

Energies

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“…Therefore,

ρ_{0}

limitation it is so important. However, based on the article, 26 MHD pump will be used for the fuel loop. Therefore, even in case of pump failure, flow will be continued because of fluid inertia and natural circulation.…”

Section: Optimization Of the Dfrmmentioning

confidence: 99%

Analyses of the shutdown system and transients scenarios for the dual fluid reactor concept with metallic molten fuel

Hanusek

Macián‐Juan

2022

Intl J of Energy Research

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In this study, building on the author's previous experience in the simulation of the MSRE system, a similar approach was used to model the dual fluid reactor design. The work was done using a modified version of the system code TRACE capable of simulating molten salt and metal flows and the transport of the neutron precursors with the flowing fuel, and the Monte Carlo based Serpent code to generate the appropriate core neutronic data used in the point kinetics models of TRACE. The authors coupled both codes Serpent and TRACE to calculate the steady-state power and temperature fields. Based on them, the authors have proposed an optimized geometry and flow rates for the reactor. With the optimized design, the results for several reactivity transient scenarios have been presented: step insertion reactivity and reactor over-and undercooled scenarios. The investigated transient scenarios show that the reactor is stable, self-regulating, and can withstand severe conditions.

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Optimization of the DC magnetohydrodynamic pump for the Dual Fluid Reactor

Cited by 2 publications

References 17 publications

Numerical Study of Flow and Heat Transfer Characteristics in a Simplified Dual Fluid Reactor

Numerical Study of Flow and Heat Transfer Characteristics in a Simplified Dual Fluid Reactor

Analyses of the shutdown system and transients scenarios for the dual fluid reactor concept with metallic molten fuel

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