scholarly journals Experimental investigation of flow pattern and sediment deposition in rectangular shallow reservoirs

2010 ◽  
Vol 25 (3) ◽  
pp. 258-270 ◽  
Author(s):  
Matthieu DUFRESNE ◽  
Benjamin J. DEWALS ◽  
Sébastien ERPICUM ◽  
Pierre ARCHAMBEAU ◽  
Michel PIROTTON
1962 ◽  
Vol 84 (3) ◽  
pp. 317-325 ◽  
Author(s):  
D. E. Abbott ◽  
S. J. Kline

Results are presented for flow patterns over backward facing steps covering a wide range of geometric variables. Velocity profile measurements are given for both single and double steps. The stall region is shown to consist of a complex pattern involving three distinct regions. The double step contains an assymmetry for large expansions, but approaches the single-step configuration with symmetric stall regions for small values of area ratio. No effect on flow pattern or reattachment length is found for a wide range of Reynolds numbers and turbulence intensities, provided the flow is fully turbulent before the step.


2015 ◽  
Vol 92 ◽  
pp. 02110 ◽  
Author(s):  
Rut Vitkovičová ◽  
Jiří Nožička ◽  
Jan Čížek ◽  
Vladislav Skála

2020 ◽  
Vol 8 (6) ◽  
pp. 5038-5041

The demand for better quality drinking water gives inspiration for advancement in the functioning of water treatment processes. Jet mixing technology, widely adopted in Flocculation process is unique due to its advantages over mechanical stirrer or vanes. Jet flocculator take primacy, as it do not have any moving parts inside the reactor. The present experimental investigation focuses on the examination of jets in flocculation. Comprehensive study of various parameters such as nozzle diameter, angle of inclination, flow pattern and jet position in two geometrical shapes of flocculation chamber: Square and Circular. Effect of tank shapes on flocculation process is analysed and compared.


2013 ◽  
Vol 51 (5) ◽  
pp. 535-547 ◽  
Author(s):  
Erica Camnasio ◽  
Sebastien Erpicum ◽  
Enrico Orsi ◽  
Michel Pirotton ◽  
Anton J. Schleiss ◽  
...  

2013 ◽  
Vol 45 (2) ◽  
pp. 563-578 ◽  
Author(s):  
Marie-Noëlle Avettand-Fènoël ◽  
Roland Taillard ◽  
Julien Laye ◽  
Thierry Odièvre

Author(s):  
Hemant B. Mehta ◽  
Jyotirmay Banerjee

The study on the effect of degree of premixing on isothermal gas-liquid two-phase flow pattern and flow pattern maps in microscale channels is inadequate. The present paper discusses the experimental investigation on air-water two-phase flow through 2.15 mm horizontal circular minichannel. Two type of inlet channel geometry, T-junction (TJ) and Y-junction (YJ), are considered. Six different flow patterns are observed and flow pattern maps are developed. The developed flow pattern maps for TJ and YJ channels are compared with the maps available in the literature. The surface tension dominated region is found to have major effect of inlet channel geometry. The results obtained for minichannel can be guidelines to analyze and design diverse two-phase microfluidic applications.


Author(s):  
Hemant B. Mehta ◽  
Jyotirmay Banerjee ◽  
Jukesh A. Dodiya ◽  
Sanket Solanki

The study on the effect of degree of premixing on isothermal gas-liquid two-phase flow pattern and flow pattern maps in microscale channels is inadequate. The present paper discusses the experimental investigation on air-water two-phase flow through 2.25 mm horizontal circular minichannel. Two type of inlet channel geometry, T-junction (TJ) and Y-junction (YJ), are considered. Six different flow patterns are observed and flow pattern maps are developed. The developed flow pattern maps for TJ and YJ channels are compared with the maps available in the literature. The surface tension dominated region is found to have major effect of inlet channel geometry. The results obtained for minichannel can be guidelines to analyze and design diverse two-phase microfluidic applications.


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