Experimental Study of Aerated Two-Phase Flow Patterns in Tandem Cascade

2009 ◽  
pp. 2146-2151
Author(s):  
Can Kang ◽  
Minguan Yang
Keyword(s):  
Experimental Study ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Phase Flow ◽  
Two Phase

scholarly journals Experimental study on vertically upward steam-water two-phase flow patterns in narrow rectangular channel

2021 ◽  
Vol 53 (1) ◽  
pp. 61-68
Author(s):  
Jiancheng Zhou ◽  
Tianzhou Ye ◽  
Dalin Zhang ◽  
Gongle Song ◽  
Rulei Sun ◽  
...  
Keyword(s):  
Experimental Study ◽  
Two Phase Flow ◽  
Rectangular Channel ◽  
Flow Patterns ◽  
Phase Flow ◽  
Two Phase

An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble Beds

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
Bai Bofeng ◽  
Liu Maolong ◽  
Su Wang ◽  
Zhang Xiaojie
Keyword(s):  
Experimental Study ◽  
Flow Pattern ◽  
Test Section ◽  
Slug Flow ◽  
Annular Flow ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Pattern Transition

An experimental study was conducted on the air-water two-phase flow patterns in the bed of rectangular cross sections containing spheres of regular distribution. Three kinds of glass spheres with different diameters (3 mm, 6 mm, and 8 mm) were used for the establishment of the test section. By means of visual observations of the two-phase flow through the test section, it was discovered that five different flow patterns occurred within the experimental parameter ranges, namely, bubbly flow, bubbly-slug flow, slug flow, slug-annular flow, and annular flow. A correlation for the bubble and slug diameter in the packed beds was proposed, which was an extended expression of the Tung/Dhir model, Jamialahmadi’s model, and Schmidt’s model. Three correlations were proposed to calculate the void friction of the flow pattern transition in bubble flow, slug flow, and annular flow based on the bubble model in the pore region. The experimental result showed that the modified Tung and Dhir model of the flow pattern transition was in better agreement with the experimental data compared with Tung and Dhir’s model.

Experimental study of gas-liquid two-phase flow patterns within centrifugal pumps impellers

2017 ◽  
Vol 85 ◽  
pp. 37-51 ◽  
Author(s):  
William Monte Verde ◽  
Jorge Luiz Biazussi ◽  
Natache Arrifano Sassim ◽  
Antonio Carlos Bannwart
Keyword(s):  
Experimental Study ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Phase Flow ◽  
Centrifugal Pumps ◽  
Two Phase

An Experimental Study on Air-Water Two-Phase Flow in Pebble Beds

2009 ◽  
Author(s):  
Bofeng Bai ◽  
Maolong Liu ◽  
Xiaojie Zhang
Keyword(s):  
Experimental Study ◽  
Test Section ◽  
Slug Flow ◽  
Annular Flow ◽  
Two Phase Flow ◽  
Experimental Parameter ◽  
Flow Patterns ◽  
Experimental Result ◽  
Phase Flow ◽  
Two Phase

An experimental study was conducted on the air-water two-phase flow patterns and pressure drop in the bed of rectangular cross section containing spheres of regular distribution. Three kinds of glass spheres with different diameters (3mm, 6mm and 8mm) were used for the establishment of the test section. By means of visual observations of the two-phase flow through the test section, it was discovered that five different flow patterns occur in the experimental parameter ranges, namely bubbly flow, bubbly-slug flow, slug flow, slug-annular flow and annular flow. A correlation for bubble and slug diameter in packed beds was proposed, which is an extension of the Tung/Dhir model, Jamialahmadi’s model and Schmidt’s model. Three correlations were proposed to calculate the void friction of flow regime transition in bubble flow, slug flow and annular flow based on the bubble model in the pore region. The experimental result shows that the modified Tung and Dhir’s model of flow pattern transition is a better agreement with the experimental data compared with Tung and Dhir’s model.

Experimental Study of Two-Phase Flow in an Oscillating Vertical Pipe

2018 ◽  
Author(s):  
Elinaldo Santos Silva ◽  
Sergio N. Bordalo
Keyword(s):  
Experimental Study ◽  
Flow Rate ◽  
Oil And Gas ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Head Loss ◽  
Phase Flow ◽  
Vertical Pipe ◽  
Two Phase ◽  
Operational Conditions

Two-phase vertical flows are of utmost importance for petroleum production, since underground petroleum reservoirs produce oil and gas simultaneously, which must flow together upward to the sea floor through wells, and from these to the production floating units through suspended pipes (risers). Along the pipelines, the mixture of oil and gas may develop several flow patterns — such as bubble, slug, churn and annular flow. These physical configurations present specific characteristics that demand distinct modeling of the head loss as a function of the flow rate. The correct characterization of the flow patterns, under given operational conditions, is fundamental to the modeling of the dynamics of the flow and to the relation between head loss and flow rate. In the literature, most studies on the establishment of the flow patterns have been carried with water and air, and have been restricted to the case of static pipes, while production risers are in constant movement due to the action of waves, sea currents and the displacement of the floating production unit. In the present work, an experimental study of vertical two-phase flow of water and air is conducted with the oscillatory movement of a long and slender flexible vertical pipe of 8,0 m of length and 25,4 mm of diameter. The head loss is measured for different frequencies of oscillation. Comparisons are made between the static and oscillating pipe, with regard to the flow patterns and head losses. The effect of the frequency of oscillation is detected.

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