An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble BedsSource: Journal of Engineering for Gas Turbines and Power:;2010:;volume( 132 ):;issue: 004::page 42903DOI: 10.1115/1.4000337Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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.
keyword(s): Flow (Dynamics) , Slug , Bubbles , Water , Bubbly flow AND Particulate matter ,
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| contributor author | Bai Bofeng | |
| contributor author | Liu Maolong | |
| contributor author | Su Wang | |
| contributor author | Zhang Xiaojie | |
| date accessioned | 2017-05-09T00:37:48Z | |
| date available | 2017-05-09T00:37:48Z | |
| date copyright | April, 2010 | |
| date issued | 2010 | |
| identifier issn | 1528-8919 | |
| identifier other | JETPEZ-27107#042903_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/143240 | |
| description abstract | 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. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble Beds | |
| type | Journal Paper | |
| journal volume | 132 | |
| journal issue | 4 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.4000337 | |
| journal fristpage | 42903 | |
| identifier eissn | 0742-4795 | |
| keywords | Flow (Dynamics) | |
| keywords | Slug | |
| keywords | Bubbles | |
| keywords | Water | |
| keywords | Bubbly flow AND Particulate matter | |
| tree | Journal of Engineering for Gas Turbines and Power:;2010:;volume( 132 ):;issue: 004 | |
| contenttype | Fulltext |