Numerical and experimental study on vorticity measurement in liquid metal using local Lorentz force velocimetry. - In: Measurement science and technology, ISSN 1361-6501, Bd. 29 (2018), 3, S. 035301, insges. 13 S.
Local Lorentz force velocimetry (local LFV) is a contactless velocity measurement technique for liquid metals. Due to the relative movement between an electrically conductive fluid and a static applied magnetic field, eddy currents and a flow-braking Lorentz force are generated inside the metal melt. This force is proportional to the flow rate or to the local velocity, depending on the volume subset of the flow spanned by the magnetic field. By using small-size magnets, a localized magnetic field distribution is achieved allowing a local velocity assessment in the region adjacent to the wall. In the present study, we describe a numerical model of our experiments at a continuous caster model where the working fluid is GaInSn in eutectic composition. Our main goal is to demonstrate that this electromagnetic technique can be applied to measure vorticity distributions, i.e. to resolve velocity gradients as well. Our results show that by using a cross-shaped magnet system, the magnitude of the torque perpendicular to the surface of the mold significantly increases improving its measurement in a liquid metal flow. According to our numerical model, this torque correlates with the vorticity of the velocity in this direction. Before validating our numerical predictions, an electromagnetic dry calibration of the measurement system composed of a multicomponent force and torque sensor and a cross-shaped magnet was done using a rotating disk made of aluminum. The sensor is able to measure simultaneously all three components of force and torque, respectively. This calibration step cannot be avoided and it is used for an accurate definition of the center of the magnet with respect to the sensor's coordinate system for torque measurements. Finally, we present the results of the experiments at the mini-LIMMCAST facility showing a good agreement with the numerical model.
https://doi.org/10.1088/1361-6501/aa9f85
Electro-polymerisation and characterisation of PEDOT in Lewis basic, neutral and acidic EMImCl-AlCl3 ionic liquid. - In: Electrochimica acta, ISSN 1873-3859, Bd. 263 (2018), S. 176-183
Im Titel ist "3" tiefgestellt
https://doi.org/10.1016/j.electacta.2018.01.033
Electrochemical-mechanical coupled modeling and parameterization of swelling and ionic transport in lithium-ion batteries. - In: Journal of power sources, ISSN 1873-2755, Bd. 378 (2018), S. 235-247
https://doi.org/10.1016/j.jpowsour.2017.12.044
Does C60 fullerene act as a transporter of small aromatic molecules?. - In: Colloids and surfaces, ISSN 1873-4367, Bd. 164 (2018), S. 134-143
Im Titel ist "60" tiefgestellt
https://doi.org/10.1016/j.colsurfb.2018.01.026
A multidisciplinary approach in wetland geoarchaeology: survey of the missing southern canal connection of the Fossa Carolina (SW Germany). - In: Quaternary international, ISSN 1040-6182, Bd. 473 (2018), Part A, (15. Apr.), Seite 3-20
https://doi.org/10.1016/j.quaint.2017.12.021
Design of contact systems under consideration of electrical and tribological properties. - In: IEEE transactions on components, packaging and manufacturing technology, ISSN 2156-3985, Bd. 8 (2018), 3, S. 427-438
https://doi.org/10.1109/TCPMT.2017.2788378
Cross-diffusion effects on a morphochemical model for electrodeposition. - In: Applied mathematical modelling, Bd. 57 (2018), S. 492-513
https://doi.org/10.1016/j.apm.2018.01.005
Influence of pin length and electrochemical platings on the mechanical strength and macroscopic defect formation in stationary shoulder friction stir welding of aluminium to copper. - In: Metals, ISSN 2075-4701, Bd. 8 (2018), 2, 85, insges. 9 S.
https://doi.org/10.3390/met8020085
Synthesis, characterization, and applications of magnetic nanoparticles featuring polyzwitterionic coatings. - In: Polymers, ISSN 2073-4360, Bd. 10 (2018), 1, 91, insges. 28 S.
https://doi.org/10.3390/polym10010091
Reversible electrostatic adsorption of polyelectrolytes and bovine serum albumin onto polyzwitterion-coated magnetic multicore nanoparticles: implications for sensing and drug delivery. - In: ACS applied nano materials, ISSN 2574-0970, Bd. 1 (2018), 1, S. 232-244
https://doi.org/10.1021/acsanm.7b00118