Topic
Liquid metal
About: Liquid metal is a research topic. Over the lifetime, 6947 publications have been published within this topic receiving 77785 citations. The topic is also known as: liquid alloy & liquid metal alloy.
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TL;DR: In this paper, negative pressure and melting point depression in oxide-coated liquid metal droplets were studied and it was shown that negative pressure increases the entropy of the melt and increases entropy loss at the crystal-melt interface.
34 citations
TL;DR: In this article, a liquid metal infused capillary porous structures (CPSs) are considered as a potential divertor solution for DEMO due to their potential power handling capability and resilience to long term damage.
Abstract: Liquid metal infused capillary porous structures (CPSs) are considered as a potential divertor solution for DEMO due to their potential power handling capability and resilience to long term damage. In this work the power handling and performance of such Sn-based CPS systems is assessed both experimentally and via modelling. A Sn-CPS target was exposed to heat fluxes of up to 18.1 MW m−2 in He plasma in the Pilot-PSI linear device. Post-mortem the target showed no damage to nor any surface exposure of the underlying W-CPS felt. The small pore size (∼40 µm) employed resulted in no droplet formation from the target in agreement with calculated Rayleigh-Taylor and Kelvin-Helmoholtz instability thresholds. The temperature response of the Sn-target was used to determine the thermal conductivity of the mixed Sn-CPS material using COMSOL modelling. These values were then used via further finite element analysis to extrapolate to DEMO relevant monoblock designs and estimate the maximum power handling achievable based on estimated temperature windows for all component elements of the design. For an optimized design a heat-load of up to 20 MW m−2 may be received while the use of CPS also offers other potential design advantages such as the removal of interlayer requirements.
33 citations
TL;DR: In this article, the mechanical properties of an experimental silicon enriched high Cr/high creep resistant bainitic steel when in contact with LBE were assessed by tensile testing as function of temperature in both liquid lead-bismuth eutectic and in an argon and hydrogen gas environment.
33 citations
03 Nov 1999-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, visualization and void fraction measurement of gas-liquid metal two-phase flow were performed by using neutron radiography and image processing techniques, and the effect of large density difference between gas and liquid phases on the basic flow characteristics of two phase flow was clarified.
Abstract: In a core melt accident of a fast breeder reactor, there is a possibility of boiling of the fuel–steel mixture in the containment pool. In relation to safety evaluation on severe accident, it is indispensable to evaluate the possibility of re-criticality of melted core. Gas–liquid two-phase flow with a large liquid-to-gas density ratio is formed due to the boiling of fuel–steel mixture. Although it is anticipated that the large density ratio may affect the basic characteristics of two-phase flow, little work has been performed so far on two-phase flow with a large liquid-to-gas density ratio. In this study, visualization and void fraction measurement of gas–liquid metal two-phase flow were performed by using neutron radiography and image processing techniques. Then, the effect of large density difference between gas and liquid phases on the basic flow characteristics of two-phase flow was clarified.
33 citations
TL;DR: In this paper, the authors provide an overview of state-of-the-art evaluations of fuel assembly and pool thermal hydraulics for liquid metal fast reactors (LMFRs) and highlight the latest worldwide developments using Computational Fluid Dynamics (CFD) simulation techniques.
33 citations