ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The flow field and gas-bubble size during the process of aluminum melt degassing wereinvestigated in water model. A Φ400mm×400mm transparent water model and an impellor degassingdevice were used in this study. The instantaneous velocity fields of water and bubbles under themixture of rotary injector were measured with PIV velocity field measurement technique. Then thepictures of bubbles gained from PIV were analyzed with software to get the bubble size distribution.The results showed that bubble flow field and bubble size were influenced by rotary speed of rotor andgas flow-rate. With the increase of rotary speed of rotor, the horizontal velocity components ofbubbles became larger, the stagnant time of bubbles in water increaseed correspondingly and bubblesize became smaller. With the increase of gas flow-rate, the longitudinal velocity components ofbubbles became larger, the stagnant time of bubbles in water decreased correspondingly, and thebubble size became larger also
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1087.pdf
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