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Frank Stefani Gunter Gerbeth Thomas Gundrum 《Materials and Manufacturing Processes》2004,19(4):651-663
The knowledge of the flow in metallic and semiconducting melts is important for a number of industrial problems. Optical methods cannot be applied due to the opaqueness of those fluids. Ultrasonic methods have problems with wetting and thermal stability when applied in hot metallic melts. Evidently, contactless methods for velocity determination would be highly desirable. In some applications, even a coarse knowledge of the flow topology and the direction of the main eddies would be of high value. The study examines the possibility of velocity reconstruction in electrically conducting fluids from external measurements of different induced magnetic fields. It is shown that, for a reliable velocity reconstruction, the effect of the electric potential at the fluid boundary on the induced magnetic field should be taken into account. 相似文献
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Krauter Nico Eckert Sven Gundrum Thomas Stefani Frank Wondrak Thomas Frick Peter Khalilov Ruslan Teimurazov Andrei 《Metallurgical and Materials Transactions B》2018,49(4):2089-2096
Metallurgical and Materials Transactions B - The determination of the Magnesium level in a Titanium reduction retort by inductive methods is often hampered by the formation of Titanium sponge rings... 相似文献
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Frank Stefani Tom Weier Thomas Gundrum Gunter Gerbeth 《Energy Conversion and Management》2011,52(8-9):2982-2986
Recently, a new type of battery has been proposed that relies on the principle of self-assembling of a liquid metalloid positive electrode, a liquid electrolyte, and a liquid metal negative electrode. While this configuration has been claimed to allow arbitrary up-scaling, there is a size limitation of such a system due to a current-driven kink-type instability that is known as the Tayler instability. We characterize this instability in large-scale self-assembled liquid metal batteries and discuss various technical means how it can be avoided. 相似文献
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