Paper Title:
Flow Field and Gas-Bubble Size Analysis in Water Model for the Process of Aluminum Melt Degassing by Particle Image Velocimetry
  Abstract

The flow field and gas-bubble size during the process of aluminum melt degassing were investigated in water model. A Φ400mm×400mm transparent water model and an impellor degassing device were used in this study. The instantaneous velocity fields of water and bubbles under the mixture of rotary injector were measured with PIV velocity field measurement technique. Then the pictures 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 and gas flow-rate. With the increase of rotary speed of rotor, the horizontal velocity components of bubbles became larger, the stagnant time of bubbles in water increaseed correspondingly and bubble size became smaller. With the increase of gas flow-rate, the longitudinal velocity components of bubbles became larger, the stagnant time of bubbles in water decreased correspondingly, and the bubble size became larger also.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1087-1092
DOI
10.4028/www.scientific.net/MSF.546-549.1087
Citation
R. Z. Wu, D. Shu, J. Wang, B. D. Sun, M. L. Zhang, "Flow Field and Gas-Bubble Size Analysis in Water Model for the Process of Aluminum Melt Degassing by Particle Image Velocimetry", Materials Science Forum, Vols. 546-549, pp. 1087-1092, 2007
Online since
May 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Peng Fei Zhang, Jian Long Hou, Ke Xue Fang
Chapter 13: Modeling, Simulation and Emulation
Abstract:At present, the studies of bubble crystallization focus on the gas velocity, crystallization efficiency and crystallization yield, the...
2383
Authors: Yi Yao Kang, Yue Lin, Xu Dong Liu, Chao Sun, Sen Sen Yuan, Yu Bo Zuo, Jian Zhong Cui
Chapter 10: Materials Processing Technologies
Abstract:Hydrogen as the main cause of the gas porosity in aluminium alloys should be removed before casting. The degassing process with intensive...
1214