Facilities, testing program and modeling needs for studying liquid metal magnetohydrodynamic flows in fusion blankets

Bühler, L.; Mistrangelo, C.; Konys, J.; Bhattacharyay, R.; Huang, Qi; Obukhov, D.M.; Smolentsev, S.; Utili, Marco

doi:10.1016/j.fusengdes.2014.03.078

Cited by 32 publications

(6 citation statements)

References 43 publications

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“…On the same note, it is challenging to demonstrate the code's scalability since no past experimental work qualifies as IET and among planned ones, only the ITER campaign will satisfy all requirements (cf. Section 4 and [57]). Therefore, it would be highly desirable to plan separate effect tests to obtain experimental data for the development of SYS-TH models, which can be integrated with numerical activities performed with validated CFD tools.…”

Section: Suitable Closing Laws For Sys-th Codesmentioning

confidence: 99%

MHD R&D Activities for Liquid Metal Blankets

et al. 2021

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According to the most recently revised European design strategy for DEMO breeding blankets, mature concepts have been identified that require a reduced technological extrapolation towards DEMO and will be tested in ITER. In order to optimize and finalize the design of test blanket modules, a number of issues have to be better understood that are related to the magnetohydrodynamic (MHD) interactions of the liquid breeder with the strong magnetic field that confines the fusion plasma. The aim of the present paper is to describe the state of the art of the study of MHD effects coupled with other physical phenomena, such as tritium transport, corrosion and heat transfer. Both numerical and experimental approaches are discussed, as well as future requirements to achieve a reliable prediction of these processes in liquid metal blankets.

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Section: Suitable Closing Laws For Sys-th Codesmentioning

confidence: 99%

MHD R&D Activities for Liquid Metal Blankets

et al. 2021

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“…Beyond the MHD pressure drop and associated flow balancing, there are many important phenomena that have not yet been uncovered. Therefore current research in the US and worldwide [31,32] are focusing more on the detailed structure of MHD flows, including various 3D and unsteady effects associated with flow instability, MHD turbulence and buoyancy-driven convection [33]. These complex MHD flow processes can affect transport properties of MHD flows in drastic ways and have a significant impact on blanket operation and performance.…”

Section: Current Studies For Mhd Thermofluid and Fluid Materials Intementioning

confidence: 99%

Dual-coolant lead–lithium (DCLL) blanket status and R&D needs

Smolentsev

Morley

Abdou

et al. 2015

Fusion Engineering and Design

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The DCLL is an attractive breeding blanket concept that leads to a hightemperature (T~700C), high thermal efficiency (η>40%) blanket system. The key element of the concept is a flow channel insert (FCI) that serves as an electrical and thermal insulator to reduce the magnetohydrodynamic (MHD) pressure drop and to decouple the temperature-limited RAFM (reduced-activation ferritic/martensitic) steel wall from the flowing hot PbLi. The paper introduces the concept, reviews history of the development of the DCLL in the US and worldwide and then identifies critical R&D needs prior to fusion environment testing in four research areas important to the successful development of the DCLL concept: (1) PbLi MHD thermofluids, (2) fluid materials interaction, (3) tritium transport, and (4) FCI development and characterization. For these areas, the most important R&D results obtained in the US in the ITER DCLL TBM program (2005-2011) and more recently are reviewed, including experimental and computational studies of MHD PbLi flows, corrosion of RAFM, tritium permeation, and silicon carbide FCI fabrication and material qualification. We also discuss required features of non-fusion facilities for DCLL blanket testing, where current lab experiments and modeling could progress to multiple effects and partially-integrated studies that approach as nearly as possible prototypic, integrated blanket conditions prior to testing in a fusion environment.

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“…In proposed blankets for fusion power plants to be realized in the future, liquid metals containing lithium are used as coolant while helium is also served as cooling material [1]. Liquid metals are excellent coolant having high heat capacity and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analyses on Liquid-Metal Magnetohydrodynamic Flow in 180°-Turn Channel

Kumamaru¹,

Takagaki²

2019

IJMEA

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Numerical calculations have been performed on liquid-metal magnetohydrodynamic (MHD) flow in a 180°-turn (i.e. hairpin-shaped) channel, in order to contribute to design of a fusion reactor blanket. A magnetic field is applied in a direction perpendicular to an inlet channel, a turning channel (turning section) and an outlet channel. The continuity equation, the momentum equation and the induction equation have been solved numerically. In this study, attention is focused on pressure drops along the channels and pressure distribution in the turning channel. The Hartmann number (indicating magnetic field strength), the Reynolds number and the channel aspect ratio, in the present calculations, cover 100 to 500, 1000 to 5000 and 1 to 1/4, respectively. The following things have become clear from calculation results. The total MHD pressure drop from a channel inlet to a channel outlet agrees approximately with that for the total channel length, meaning that the loss coefficient for the turning channel is nearly zero or small. For large Reynolds numbers, the pressure in the peripheral region of the turning channel becomes larger than that at the channel inlet, due to the centrifugal force acting in the turning channel. It is considered that this pressure increase should be taken into account in designing a fusion reactor blanket.

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Facilities, testing program and modeling needs for studying liquid metal magnetohydrodynamic flows in fusion blankets

Cited by 32 publications

References 43 publications

MHD R&D Activities for Liquid Metal Blankets

MHD R&D Activities for Liquid Metal Blankets

Dual-coolant lead–lithium (DCLL) blanket status and R&D needs

Numerical Analyses on Liquid-Metal Magnetohydrodynamic Flow in 180°-Turn Channel

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