106 citations · 771 across the 27 of their papers we have counts for
29 papers
Yamdb: easily accessible thermophysical properties of liquid metals and molten salts
Tom Weier, William Nash, Paolo Personnettaz +1
Yamdb (Yet another materials data base) addresses the need to provide thermophysical properties of liquid metals and molten salts in an easily accessible manner. Mathematical relat…
No evidence for absence of solar dynamo synchronization
F. Stefani, J. Beer, T. Weier
Context: The old question of whether the solar dynamo is synchronized by the tidal forces of the orbiting planets has recently received renewed interest, both from the viewpoint of…
Simulation of potential and species distribution in a Li||Bi liquid metal battery using coupled meshes
Carolina Duczek, Norbert Weber, Omar E. Godinez-Brizuela +1
In this work a 1D finite volume based model using coupled meshes is introduced to capture potential and species distribution throughout the discharge process in a lithium bismuth l…
Layer coupling between solutal and thermal convection in liquid metal batteries
Paolo Personnettaz, Tanja Sophia Klopper, Norbert Weber +1
For longer than one decade, liquid metal batteries (LMBs) are developed with the primary aim to provide economic stationary energy storage. Featuring two liquid metal electrodes se…
Transient behaviour of electrovortex flow in a cylindrical container
Ke Liu, Frank Stefani, Norbert Weber +2
This study is a continuation of the combined experimental and numerical investigation [1] of the flow of the eutectic GaInSn alloy inside a cylindrical vessel exposed to a constant…
Cell voltage model for Li-Bi liquid metal batteries
Norbert Weber, Carolina Duczek, Gerrit M. Horstmann +5
Lithium-bismuth bimetallic cells are amongst the best explored liquid metal batteries. A simple and fast quasi-one-dimensional cell voltage model for such devices is presented. The…
Anode-metal drop formation and detachment mechanisms in liquid metal batteries
Sabrina Bénard, Norbert Weber, Gerrit Maik Horstmann +2
We study numerically localised short circuits in Li||Bi liquid metal batteries. In the prototype of a classical, three liquid-layer system, we assume a perceptible local deformatio…
Conductivity influence on interfacial waves in liquid metal batteries and related two-layer systems
Tom Weier, Ilmars Grants, Gerrit Maik Horstmann +5
Fluid flows in liquid metal batteries can be generated by a number of effects. We start with a short overview of different driving mechanisms and then address questions specific to…
Effects of current distribution on mass transport in the positive electrode of a liquid metal battery
Paolo Personnettaz, Steffen Landgraf, Michael Nimtz +2
Liquid metal electrodes are one of the key components of different electrical energy storage technologies. The understanding of transport phenomena in liquid electrodes is mandator…
Shaken and stirred: When Bond meets Suess-de Vries and Gnevyshev-Ohl
Frank Stefani, Rodion Stepanov, Tom Weier
We argue that the most prominent temporal features of the solar dynamo, in particular the Hale cycle, the Suess-de Vries cycle (associated with variations of the Gnevyshev-Ohl rule…
Phase coherence and phase jumps in the Schwabe cycle
F. Stefani, J. Beer, A. Giesecke +4
Guided by the working hypothesis that the Schwabe cycle of solar activity is synchronized by the 11.07 years alignment cycle of the tidally dominant planets Venus, Earth and Jupite…
Numerical and Experimental Investigation of Electro-Vortex Flow in a Cylindrical Container
K. Liu, F. Stefani, N. Weber +2
In a cylindrical container filled with an eutectic GaInSn alloy, an electro-vortex flow (EVF) is generated by the interaction of a non-uniform current with its own magnetic field.…
Schwabe, Gleissberg, Suess-de Vries: Towards a consistent model of planetary synchronization of solar cycles
F. Stefani, A. Giesecke, M. Seilmayer +2
Aiming at a consistent planetary synchronization model of both short-term and long-term solar cycles, we start with an analysis of Schove's historical data of cycle maxima. Their d…
Modeling discontinuous potential distributions using the finite volume method, and application to liquid metal batteries
Norbert Weber, Steffen Landgraf, Kashif Mushtaq +5
The electrical potential in a battery jumps at each electrode-electrolyte interface. We present a model for computing three-dimensional current and potential distributions, which a…
Measurement of interfacial wave dynamics in orbitally shaken cylindrical containers using ultrasound pulse-echo techniques
Gerrit Maik Horstmann, Markus Wylega, Tom Weier
We present a novel experiment on interfacial wave dynamics in orbitally shaken cylindrical vessels containing two- and three fluid layers. The experiment was designed as a hydrodyn…
A model of a tidally synchronized solar dynamo
Frank Stefani, André Giesecke, Tom Weier
We discuss a solar dynamo model of Tayler-Spruit type whose Omega-effect is conventionally produced by a solar-like differential rotation but whose alpha-effect is assumed to be pe…
Electromagnetically driven convection suitable for mass transfer enhancement in liquid metal batteries
Norbert Weber, Michael Nimtz, Paolo Personnettaz +2
Liquid metal batteries (LMBs) were recently proposed as cheap large scale energy storage. Such devices are urgently required for balancing highly fluctuating renewable energy sourc…
Competing forces in liquid metal electrodes and batteries
Rakan F. Ashour, Douglas H. Kelley, Alejandro Salas +3
Liquid metal batteries are proposed for low-cost grid scale energy storage. During their operation, solid intermetallic phases often form in the cathode and are known to limit the…
Fluid Mechanics of Liquid Metal Batteries
Douglas H. Kelley, Tom Weier
The design and performance of liquid metal batteries, a new technology for grid-scale energy storage, depend on fluid mechanics because the battery electrodes and electrolytes are…
Coupling and stability of interfacial waves in liquid metal batteries
Gerrit Maik Horstmann, Norbert Weber, Tom Weier
We investigate the interfacial wave coupling dynamics in liquid metal batteries and their effects to the battery's operation safety. Similar to aluminum reduction cells, liquid met…
Electro-vortex flow simulation using coupled meshes
Norbert Weber, Pascal Beckstein, Vladimir Galindo +2
A numerical model for simulating electro-vortical flows in OpenFOAM is developed. Electric potential and current are solved in coupled solid-liquid conductors by a parent-child mes…
The DRESDYN project: planned experiments and present status
Frank Stefani, Sven Eckert, Gunter Gerbeth +5
The Dresden sodium facility for dynamo and thermohydraulic studies (DRESDYN) is a platform for large-scale liquid sodium experiments devoted to fundamental geo- and astrophysical q…
Metal pad roll instability in liquid metal batteries
Norbert Weber, Pascal Beckstein, Vladimir Galindo +4
The increasing deployment of renewable energies requires three fundamental changes to the electric grid: more transmission lines, a flexibilisation of the demand and grid scale ene…
The Tayler instability at low magnetic Prandtl numbers: between chiral symmetry breaking and helicity oscillations
Norbert Weber, Vladimir Galindo, Frank Stefani +1
The Tayler instability is a kink-type, current driven instability that plays an important role in plasma physics but might also be relevant in liquid metal applications with high e…