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| Vivek V. Buwa | |
| Facilities | ||
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Voidage probes |
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| Photograph of a typical dual tip voidage probe | In-house developed signal conditioning unit (Front (top) and rear (bottom) panel) | Data Acquisition System (NI USB-6363, National Instruments, USA) |
| Specification: | ||
| Voidage probe | : | Developed and fabricated in-house |
| Signal conditioning unit | : | In-house developed, provision of 16 input/output BNC connections with simultaneous multichannel data sampling rate of 20 kHz |
| Data acquisition system | : | National Instruments, USA (Model: NI USB 6363), provision of 16 differential channel input with a simultaneous multichannel data sampling rate of 1 MHz |
| Applications: |
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Characterization of dynamics of gas-liquid and gas-liquid-solid flows
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Measurements of local gas volume fraction and bubble size distribution
in two-/three-phase flow in bubble/slurry bubble columns
· Cold flow characterization of Basic Oxygen Furnace used for steel making
· Liquid distribution generated by distributors used in trickle beds · Local (particle)-scale flow in trickle beds |
| Representative signal of a typical voidage probe |
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| Use of voidage sensors to study morphology of flow inside a TBR (Singh et al., 2018) | |||
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Snapshots of dense gas–liquid flow in a
rectangular bubble column for UG
of (a) 1, (b) 5,
(c) 10 and (d) 30 cm·s-1
(Tyagi and Buwa, 2017)
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Effect of UG
on time-evolution of instantaneous gas volume fraction fluctuations for
UG
of (a) 1, (b) 5, (c) 10 and (d) 30 cm·s-1
(Tyagi and Buwa, 2017) |
Spatial distribution of time-averaged gas volume fraction decompose according to bubble size groups for UG = 30 cm·s-1 (Tyagi and Buwa, 2017). | |
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| Cylindrical bubble column | Time-averaged gas volume fraction profiles measured using voidage probe and ERT (Singh et al., 2017) | Power spectra of gas volume fraction measured using voidage probe and ERT (Singh et al., 2017) | |
| Publications and Conferences: |
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