An experimental study is performed to determine mixing performance in gas-ladles with throughflow having tap-addition of particles. Behavior of ascending gas bubbles in the plume and recirculating liquid-particle two-phase flow is visualized by means of direct photography aided by white light-sheet illumination. The path line profile and the history of ascending velocity of gas bubbles from the gas-injection nozzle installed at the ladle bottom are measured with the aid of the image processing method. It is disclosed that a rhythm is discovered in bubble detachment from the nozzle tip. This rhythm repeats by cycle and is characterized by two distinct patterns, forming the discrete bubbles regime and continuous jet regime for lower and higher air injection rates, respectively. Inspective of air injection rate, the growth of each bubble can be divided into the initial, intermediate, and final stages. Each stage has its own distinct bubble growth velocity, path line profile, and ascending velocity. The theoretical equation is derived to correlate experimental data on bubble path line.
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4939-2
PROCEEDINGS PAPER
Experimental and Theoretical Study on Mixing Performance in Gas-Stirred Ladles With Throughflow Having Tap-Stream Addition of Particulates
Wen-Jei Yang
,
Wen-Jei Yang
University of Michigan, Ann Arbor, MI
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Shuichi Torii
Shuichi Torii
Kumamoto University, Kumamoto, Kumamoto, Japan
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Author Information
Wen-Jei Yang
University of Michigan, Ann Arbor, MI
Shuichi Torii
Kumamoto University, Kumamoto, Kumamoto, Japan
Paper No:
IHTC14-22115, pp. 221-230; 10 pages
Published Online:
March 1, 2011
Citation
Yang, Wen-Jei, and Torii, Shuichi. "Experimental and Theoretical Study on Mixing Performance in Gas-Stirred Ladles With Throughflow Having Tap-Stream Addition of Particulates." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 4. Washington, DC, USA. August 8–13, 2010. pp. 221-230. ASME. https://doi.org/10.1115/IHTC14-22115
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