scholarly journals Experimental investigation of the interaction of two cylinders in the flow pattern

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

Experimental Investigation of Subsonic Turbulent Flow Over Single and Double Backward Facing Steps

1962 ◽  
Vol 84 (3) ◽  
pp. 317-325 ◽  
Author(s):  
D. E. Abbott ◽  
S. J. Kline
Keyword(s):  
Experimental Investigation ◽  
Velocity Profile ◽  
Flow Pattern ◽  
Reynolds Numbers ◽  
Area Ratio ◽  
Single Step ◽  
Reattachment Length ◽  
Double Step ◽  
Wide Range ◽  
Geometric Variables

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.

scholarly journals Comprehensive Analysis of Jet Flocculator in Square and Circular Basin

2020 ◽  
Vol 8 (6) ◽  
pp. 5038-5041
Keyword(s):  
Experimental Investigation ◽  
Drinking Water ◽  
Water Treatment ◽  
Flow Pattern ◽  
Comprehensive Analysis ◽  
Jet Mixing ◽  
Treatment Processes ◽  
Geometrical Shapes ◽  
Flocculation Process ◽  
Comprehensive Study

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.

Experimental Investigation of Three-Dimensional (3-D) Material Flow Pattern in Thick Dissimilar 2050 Friction-Stir Welds

2013 ◽  
Vol 45 (2) ◽  
pp. 563-578 ◽  
Author(s):  
Marie-Noëlle Avettand-Fènoël ◽  
Roland Taillard ◽  
Julien Laye ◽  
Thierry Odièvre
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern ◽  
Material Flow ◽  
Three Dimensional ◽  
Friction Stir

Experimental Investigation of Degree of Premixing on Isothermal Air-Water Two-Phase Flow Through Minichannel

2014 ◽  
Author(s):  
Hemant B. Mehta ◽  
Jyotirmay Banerjee
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Major Effect ◽  
Phase Flow ◽  
Inlet Channel ◽  
Two Phase ◽  
Channel Geometry ◽  
Flow Through ◽  
Isothermal Gas

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.

Experimental Investigation of Degree of Premixing on Isothermal Air-Water Two-Phase Flow Through Minichannel

2013 ◽  
Author(s):  
Hemant B. Mehta ◽  
Jyotirmay Banerjee ◽  
Jukesh A. Dodiya ◽  
Sanket Solanki
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Major Effect ◽  
Phase Flow ◽  
Inlet Channel ◽  
Two Phase ◽  
Channel Geometry ◽  
Flow Through ◽  
Isothermal Gas

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.

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
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern ◽  
Sediment Deposition ◽  
Shallow Reservoirs

Experimental Investigation on Droplet Behaviour in a Transonic Compressor Cascade

2014 ◽  
Author(s):  
Niklas Neupert ◽  
Birger Ober ◽  
Franz Joos
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern ◽  
Gas Turbines ◽  
Surface Film ◽  
Flow Channel ◽  
Point Of View ◽  
Compressor Cascade ◽  
Two Phase ◽  
Transonic Compressor ◽  
Droplet Behavior

In recent years overspray fogging has become a powerful means for power augmentation of industrial gas turbines. Most of the studies concerning this topic focus on the problem from a thermodynamic point of view as summarized by Eisfeld and Joos [1]. Only a few studies, however, were undertaken to investigate the droplet behavior in the flow channel of a compressor. Eisfeld and Joos [2] and Ober [3] revealed qualitative results showing a large variety of two-phase phenomena present. In this paper results of experimental investigation of a water laden flow through a compressor cascade are presented. A finely dispersed spray was used in the measurements (D10 < 10μm). Results of the droplet behavior in a transonic compressor cascade are shown in terms of shadowgraphy images and images of the blade surface film pattern. The angle of attack, the incoming velocity and the water load were varied to estimate the influence of these parameters on the flow pattern. The qualitative observations of the flow pattern are related to LDA/PDA data of the flow channel and at the outlet of the cascade. The data represents a base for numerical and mean line models of two phase compressor flow concerning droplet-wall interactions as well as flow induced breakup.

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