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.
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April 2010
Research Papers
An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble Beds
Bai Bofeng,
Bai Bofeng
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
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Liu Maolong,
Liu Maolong
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
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Su Wang,
Su Wang
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
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Zhang Xiaojie
Zhang Xiaojie
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
Search for other works by this author on:
Bai Bofeng
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
Liu Maolong
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
Su Wang
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, China
Zhang Xiaojie
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an 710049, ChinaJ. Eng. Gas Turbines Power. Apr 2010, 132(4): 042903 (5 pages)
Published Online: January 27, 2010
Article history
Received:
July 17, 2009
Revised:
August 7, 2009
Online:
January 27, 2010
Published:
January 27, 2010
Citation
Bofeng, B., Maolong, L., Wang, S., and Xiaojie, Z. (January 27, 2010). "An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble Beds." ASME. J. Eng. Gas Turbines Power. April 2010; 132(4): 042903. https://doi.org/10.1115/1.4000337
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