Morphodynamics of flow-sediment-structure interaction and flow pattern visualization

Multi-phase flows are widely encountered in several engineering and industrial facilities, such as conventional steam power plants, evaporators and condensers, pressurized-water nuclear reactors, a wide variety of petroleum industries, chemicals and food processing industries. Surely, in the complex pipeline installation of these systems, vertical pipe will be commonly used for pipe connection. The purpose of this work is to investigate the flow pattern of gas-liquid two phase in the vertical pipe. Experiments will be performed in a 36 mm ID acrylic pipe vertical. Superifical liquid velocities and volumetric gas quality will be varied 0.3~1,1 m/s and 0.05~0.2 respectively. Digital camera will be used for flow pattern visualization in the vertical pipe. It was observed that effect of vertical pipe on flow pattern formed cluster bubbly flow for low volumetric gas quality with high superifical liquid velocities. For superifical liquid velocities with medium volumetric gas quality formed homogeneous bubbly flow and high volumetric gas quality is dense bubbly flow.

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10112 Flow pattern visualization and measurement of water film flow on rotating wafer

The Proceedings of Conference of Kanto Branch ◽

10.1299/jsmekanto.2015.21._10112-1_ ◽

2015 ◽

Vol 2015.21 (0) ◽

pp. _10112-1_-_10112-2_ ◽

Cited By ~ 1

Author(s):

Kenji AMAGAI ◽

Yoshihiro KIYAMA ◽

Akira FUKUNAGA ◽

Hirokuni HIYAMA ◽

Satomi HAMADA

Keyword(s):

Flow Pattern ◽

Film Flow ◽

Water Film ◽

Pattern Visualization

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406 Oil Flow Pattern Visualization by Combustion Chamber Deposit Formation on a Piston Crown of a Two-Stroke Cycle Engine

The Proceedings of Yamanashi District Conference ◽

10.1299/jsmeyamanashi.2006.87 ◽

2006 ◽

Vol 2006 (0) ◽

pp. 87-88

Author(s):

Takuya ENDO ◽

Naotake FUJITA ◽

Michio KITANO

Keyword(s):

Combustion Chamber ◽

Flow Pattern ◽

Deposit Formation ◽

Piston Crown ◽

Oil Flow ◽

Pattern Visualization ◽

Stroke Cycle ◽

Combustion Chamber Deposit

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Flow pattern visualization in a mimic anaerobic digester using CFD

Biotechnology and Bioengineering ◽

10.1002/bit.20388 ◽

2005 ◽

Vol 89 (6) ◽

pp. 719-732 ◽

Cited By ~ 77

Author(s):

Mehul S. Vesvikar ◽

Muthanna Al-Dahhan

Keyword(s):

Flow Pattern ◽

Anaerobic Digester ◽

Pattern Visualization

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Liquid–Liquid Flow Pattern Visualization and Mapping in a Millimetric Size Coiled Tube

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.8b05315 ◽

2018 ◽

Vol 58 (2) ◽

pp. 1075-1086 ◽

Cited By ~ 1

Author(s):

Enrique A. López-Guajardo ◽

Gabriela M. Garza-Cantú ◽

André Marques-Camarena ◽

Enrique Ortiz-Nadal ◽

Krishna D.P. Nigam ◽

...

Keyword(s):

Flow Pattern ◽

Liquid Flow ◽

Coiled Tube ◽

Pattern Visualization

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Flow pattern visualization in a mimic anaerobic digester: experimental and computational studies

Water Science & Technology ◽

10.2166/wst.2005.0564 ◽

2005 ◽

Vol 52 (1-2) ◽

pp. 537-543 ◽

Cited By ~ 15

Author(s):

M.S. Vesvikar ◽

R. Varma ◽

K. Karim ◽

M. Al-Dahhan

Keyword(s):

Flow Pattern ◽

Gas Flow ◽

Draft Tube ◽

Liquid Velocity ◽

Single Point ◽

Appreciable Effect ◽

Cfd Simulations ◽

Flat Bottom ◽

Dead Zones ◽

Pattern Visualization

Advanced non-invasive experiments like computer automated radioactive particle tracking and computed tomography along with computational fluid dynamics (CFD) simulations were performed in mimic anaerobic digesters to visualize their flow pattern and obtain hydrodynamic parameters. The mixing in the digester was provided by sparging gas at three different flow rates. The simulation results in terms of overall flow pattern, location of circulation cells and stagnant regions, trends of liquid velocity profiles, and volume of dead zones agree reasonably well with the experimental data. CFD simulations were also performed on different digester configurations. The effects of changing draft tube size, clearance, and shape of the tank bottoms were calculated to evaluate the effect of digester design on its flow pattern. Changing the draft tube clearance and height had no influence on the flow pattern or dead regions volume. However increasing the draft tube diameter or incorporating a conical bottom design helped in reducing the volume of the dead zones as compared to a flat bottom digester. The simulations showed that the gas flow rate sparged by a single point (0.5 cm diameter) sparger does not have appreciable effect on the flow pattern of the digesters.

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