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| Vivek V. Buwa | |
| Facilities | ||||
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Electrical Capacitance Tomography (ECT) |
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| Photograph of ECT | Sensor | Schematic of sensor | Cross-sectional view of the sensor | |
| Specification: |
| Sensor | : |
2 plane sensors each having 12 measuring electrodes |
| Time-resolution | : | 10 – 33 fps |
| Spatial-resolution | : | 5 - 10% of the column ID |
| Image reconstruction algorithm | : | Iterative linear back projection, Iterative Landweber (under construction) |
| OEM | : | Industrial Tomography Systems (ITS) Inc., UK |
| Applications:Applications: |
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· Dense/dilute
gas-solid and liquid-solid fluidized beds
· Dense gas-liquid
flow in bubble columns · Local liquid distribution in trickle beds |
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| 3D (x-y-t) tomograms of solid volume fraction at different superficial velocities | Solid volume fraction distribution of (a) glass beads and (b) mustard seeds on the column cross-section at Ug = 0.9 m/s and z = 8.9 cm from the gas distributor |
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Contours of solid volume fraction evolution along the radial direction of particles size (a) 100 µm, (b) 900 µm and (c) the mixture at UG = 0.87 m/s and z = 24 cm from the sparger. |
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| Publications and Conferences: |
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• Sirisha Parvathaneni, Brajesh Singh, Vivek V. Buwa, "Characterization of Polydisperse and Binary Gas-Solid Flow in a Semi-Batch Fluidized Bed using Electrical Capacitance Tomography", presented at International Symposium on Chemical Reaction Engineering (ISCRE 25), Florence (Italy), 2018
Brajesh K. Singh,
Shantanu Roy and Vivek V. Buwa, 2017, “Characterization of Dynamics of
Unary and Binary Gas-solid Flow in a Cylindrical Fluidized Bed using
Electrical Capacitance Tomography”, Accepted for presentation at 13th
International Conference on Gas-Liquid and Gas-Liquid-Solid Reaction
Engineering (GLS 13) to be held at Brussels (Belgium), 20-23 August
2017. • Brajesh K. Singh,
Shantanu Roy and Vivek V. Buwa, “Dynamics of Unary and Binary Gas-Solid
Flows: ECT Measurements and CFD Simulations”, presented at 12th
International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor
Engineering (GLS-12), New York (USA), 28 June – 01 July 2015. • Brajesh K. Singh,
Shantanu Roy and Vivek V. Buwa, " Characterization of Gas-Solid Flows in
a Fluidized Bed Using Electrical Capacitance Tomography, presented at
23rd International Symposium on Chemical Reaction Engineering (ISCRE
23), Bangkok (Thailand), 07-10 September 2014. |