Flow measurement in metal melts using a non-contact surface velocity sensor based on time-of-flight Lorentz force velocimetry

2014 ◽  
Vol 44 (2) ◽  
pp. 183-191 ◽  
Author(s):  
D. Schumacher ◽  
Ch. Karcher
Keyword(s):  
Lorentz Force ◽  
Contact Surface ◽  
Flow Measurement ◽  
Time Of Flight ◽  
Surface Velocity ◽  
Velocity Sensor ◽  
Metal Melts ◽  
Lorentz Force Velocimetry

Lorentz force velocimetry based on time-of-flight measurements

2010 ◽  
Vol 22 (12) ◽  
pp. 125101 ◽  
Author(s):  
Axelle Viré ◽  
Bernard Knaepen ◽  
André Thess
Keyword(s):  
Lorentz Force ◽  
Time Of Flight ◽  
Lorentz Force Velocimetry ◽  
Flight Measurements

scholarly journals Low-cost Solutions for Velocimetry in Rotating and Opaque Fluid Experiments using Ultrasonic Time of Flight

2021 ◽  
Author(s):  
Fabian Burmann ◽  
Jerome Noir ◽  
Stefan Beetschen ◽  
Andrew Jackson
Keyword(s):  
Acoustic Waves ◽  
Flow Measurement ◽  
Low Cost ◽  
Time Of Flight ◽  
Zonal Flow ◽  
Gravitational Acceleration ◽  
Complex Flow ◽  
Ultrasonic Time ◽  
Theoretical Predictions ◽  
Complex Flow Structure

AbstractMany common techniques for flow measurement, such as Particle Image Velocimetry (PIV) or Ultrasonic Doppler Velocimetry (UDV), rely on the presence of reflectors in the fluid. These methods fail to operate when e.g centrifugal or gravitational acceleration leads to a rarefaction of scatterers in the fluid, as for instance in rapidly rotating experiments. In this article we present two low-cost implementations for flow measurement based on the transit time (or Time of Flight) of acoustic waves, that do not require the presence of scatterers in the fluid. We compare our two implementations against UDV in a well controlled experiment with a simple oscillating flow and show we can achieve measurements in the sub-centimeter per second velocity range with an accuracy of $\sim 5-10\%$ ∼ 5 − 10 % . We also perform measurements in a rotating experiment with a complex flow structure from which we extract the mean zonal flow, which is in good agreement with theoretical predictions.

Preliminary experimental study on applicability of Lorentz force velocimetry in an external magnetic field

2018 ◽  
Vol 29 (6) ◽  
Author(s):  
Yan-Qing Tan ◽  
Run-Cong Liu ◽  
Shang-Jun Dai ◽  
Xiao-Dong Wang ◽  
Ming-Jiu Ni ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
External Magnetic Field ◽  
Lorentz Force ◽  
Lorentz Force Velocimetry
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