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Direct measurement of turbulent magnetic diffusivity in liquid metal flow
2009In the mean field MHD-theory, an increase in the effective magnetic diffusivity (decrease of electric conductivity) of the developed turbulent flow of conducting fluid is commonly referred to as the β-effect. In spite of the fact that the effect seems to be quite obvious (in comparison with a far more sophisticated β-effect), up to now there have been ...
P. Frick +3 more
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Contactless flow measurement in liquid metal using electromagnetic time-of-flight method
Measurement Science and Technology, 2016Measuring flow rates of liquid metal flows is of utmost importance in industrial applications such as metal casting, in order to ensure process efficiency and product quality. A non-contact method for flow rate control is described here. The method is known as time-of-flight Lorentz force velocimetry (LFV) and determines flow rate through measurement ...
Nataliia Dubovikova +3 more
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Detection of liquid–metal, free-surface flow using the DLP measurement technique
Experiments in Fluids, 2011Novel accelerator applications favor free-surface liquid–metal flows, in which the liquid acts both as a target producing secondary particles but also to remove efficiently the heat deposited. A crucial aspect for the operation is the continuous monitoring of both shape and position of the liquid’s surface. This demands, in a nuclear environment, a non-
Hillenbrand, M. P. +2 more
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Convective heat-transfer measurements in liquid metals under different fluid flow conditions
Metallurgical Transactions B, 1988In this study an experimental method to measure convective heat transfer characteristics in liquid metals is presented. This method involves the immersion into a metal bath of a solid specimen whose melting point is equal to or lower than that of the metal or alloy in the metal bath, and which will not react chemically with the liquid metal or alloys ...
Panagiotis G. Sismanis +1 more
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Probes for local velocity and temperature measurements in liquid metal flow
International Journal of Heat and Mass Transfer, 1985Abstract A permanent magnet probe for local velocity, temperature and turbulent heat flux measurements in liquid metals is described. The sensitivity and the linearity of the probe are discussed and the thermoelectric and thermomagnetic sources of error are estimated, since they can be important. It is found that in flow regimes influenced by natural
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Measurements of time-dependent liquid-metal magnetohydrodynamic flows in a flat rectangular duct
Fusion Engineering and Design, 2009In the helium-cooled lead lithium (HCLL) blanket, which has been chosen as a reference concept for a liquid-metal breeding blanket to be tested in ITER, the heat is removed by helium cooled plates aligned with the strong toroidal magnetic field that confines the fusion plasma. The liquid breeder lead lithium circulates through gaps of rectangular cross-
Bühler, L., Horanyi, S.
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Influence of surface oxidation on electric potential measurements in MHD liquid metal flows
Fusion Engineering and Design, 2014Abstract Experimental investigations for magnetohydrodynamic flows in rectangular ducts are performed using GaInSn as model fluid. Measurements of electric potential on channel walls and inside the flow show reproducible discrepancies compared to analytical results.
Chowdhury, V. +2 more
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Spatially resolved measurements in a liquid metal flow with Lorentz force velocimetry
Experiments in Fluids, 2013Velocity measurements inside metal melt flows are important for many laboratory and industrial applications in metallurgy but remain experimentally challenging. Only few techniques are viable for the measurement of mean flow velocities inside hot and aggressive materials.
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Electromagnetic flow measurements in liquid metals using time-of-flight Lorentz force velocimetry
Measurement Science and Technology, 2012Time-of-flight Lorentz force velocimetry is a non-invasive electromagnetic measurement technique that can be used to determine both the flow rate and/or the local velocities in electrically conducting fluids like liquid metals. Using this technique, two identical so-called Lorentz force flow meters—each consisting of a permanent magnet system and an ...
Dandan Jian, Christian Karcher
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Measurement of liquid-metal coolants flow for fast reactors
Izmeritel`naya Tekhnika, 2018I. D. Velt +2 more
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