Journal ArticleDOI
Capacitance wire-mesh sensor for fast measurement of phase fraction distributions
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TLDR
In this paper, a wire-mesh sensor based on capacitance measurements is proposed to measure transient phase fraction distributions in a flow cross-section, such as in a pipe or other vessel, and is able to discriminate fluids having different relative permittivity values in a multiphase flow.Abstract:
We introduce a new wire-mesh sensor based on capacitance (permittivity) measurements. The sensor can be used to measure transient phase fraction distributions in a flow cross-section, such as in a pipe or other vessel, and is able to discriminate fluids having different relative permittivity (dielectric constant) values in a multiphase flow. We designed and manufactured a prototype sensor which comprises two planes of 16 wires each. The wires are evenly distributed across the measuring cross-section, and measurement is performed at the wire crossings. Time resolution of the prototype sensor is 625 frames per second. Sensor and measuring electronics were evaluated showing good stability and accuracy in the capacitance measurement. The wire-mesh sensor was tested in a silicone oil/water two-phase bubbly flow.read more
Citations
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Flexible microfluidic normal force sensor skin for tactile feedback
TL;DR: In this article, a flexible and multilayer capacitive microfluidic normal force sensor is developed with a 5 × 5 taxel array, which is shown to provide repeatable measurements of static uniaxial loads, and follows the loading and unloading phases of low-frequency dynamic loads.
Journal ArticleDOI
High-resolution gas–oil two-phase flow visualization with a capacitance wire-mesh sensor
TL;DR: In this article, a wire-mesh sensor based on electrical capacitance measurements for the investigation of gas-oil two-phase flow in a vertical pipe of 67 mm diameter under industrial operating conditions is reported.
Journal ArticleDOI
Comparative study of gas–oil and gas–water two-phase flow in a vertical pipe
Lutz Szalinski,Lokman A. Abdulkareem,M. J. da Silva,S. Thiele,Matthias Beyer,Dirk Lucas,V. Hernandez Perez,Uwe Hampel,Barry J. Azzopardi +8 more
TL;DR: A wire-mesh sensor has been employed to study air/water and air/silicone oil two-phase flow in a vertical pipe of 67mm diameter and 6m length.
Journal ArticleDOI
Grid Generation Issues in the CFD Modelling of Two-Phase Flow in a Pipe
TL;DR: The grid generation issues found in the 3D simulation of two-phase flow in a pipe using Computational Fluid Dynamics (CFD) are discussed in this paper, showing that there is a strong dependency of the flow behaviour on the mesh employed.
Journal ArticleDOI
Slip ratio in dispersed viscous oil-water pipe flow
Iara Hernandez Rodriguez,Henrique Kazuo Bicalho Yamaguti,Marcelo Souza de Castro,Marco Jose da Silva,Oscar Mauricio Hernandez Rodriguez +4 more
TL;DR: In this article, a 26.2mm-i.d. horizontal glass pipe was used to investigate the phase slip of viscous oil and water in a wire-mesh sensor.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
A new electrode-mesh tomograph for gas–liquid flows
TL;DR: In this article, an electrode-mesh tomograph for high-speed visualisation of transient gas fraction distributions in two-phase flows in pipes is presented, which is based on the measurement of the local instantaneous conductivity of the 2-phase mixture.
Book
Process Tomography: Principles, Techniques and Applications
TL;DR: In this article, the authors describe a wide range of applications and practical results of the techniques detailed above, including those to particulate flows, fluidized beds, mixing transport and separation processes and combustion systems.
Journal ArticleDOI
Measuring techniques in gas–liquid and gas–liquid–solid reactors
TL;DR: In this paper, an overview of multiphase flow metering techniques for gas/liquid analysis can be found, including nonintrusive techniques that deliver global, cross-section-averaged or local data.