Paper Title:
On the Fluid Flow and Mixing Phenomena in Ladles Equipped with Impeller and Gas Purging for Degassing of Al-Based Alloys
  Abstract

In this work a fundamental Eulerian mathematical model is developed to simulate fluid flow and mixing phenomena in aluminum ladles equipped with an impeller for dehydrogenization treatment. The effect of rotating speed and type of impeller, depth of immersion, and gas flow rate, on the mixing behavior and vortex formation is analyzed with this model. The model simulates operation with and without gas injection and it is developed in the commercial PHOENICS 3.4 CFD code in order to solve all conservation equations governing the process, i.e., continuity, 3D turbulent Navier-Stokes and k-ε turbulence model for a two-phase fluid flow problem using the Inter Phase Slip Algorithm. In order to realistically represent the process, the shape of the furnace and the impellers are modeled by employing Body Fitted Coordinates. It is concluded that the mixing behavior is highly dependent on the rotation speed and impeller type. Mixing time is improved when: the impeller is located at a depth of 0.229 m into the aluminum bath, and by using high rotation speeds, ladles with a high ratio of diameter to height, and impellers with notches.

  Info
Periodical
Edited by
H. Balmori-Ramirez, J.G. Cabañas-Moreno, H.A. Calderon-Benavides, K. Ishizaki and A. Salinas-Rodriguez
Pages
145-150
DOI
10.4028/www.scientific.net/MSF.560.145
Citation
M. Ramírez-Argáez, F. Contreras-Bustos, C. González-Rivera, "On the Fluid Flow and Mixing Phenomena in Ladles Equipped with Impeller and Gas Purging for Degassing of Al-Based Alloys", Materials Science Forum, Vol. 560, pp. 145-150, 2007
Online since
November 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: Lei Shi, Shen Jie Zhou, Feng Ling Yang, Fan Jin Hu
Chapter 4: Fluid Machinery and Engineering
Abstract:Mixing efficiency is an important parameter in the design of many industrial processes in stirred tanks. In this study, CFD technology was...
559
Authors: Gui Chao Wang, Shen Jie Zhou, Feng Ling Yang, Song Ying Chen
Chapter 4: Fluid Machinery and Engineering
Abstract:Particles concentration distribution in a stirred tank with pitched blade turbine was investigated using computational fluid dynamics. The...
696
Authors: Ting An Zhang, Yan Liu, Qiang Wang, Ji Cheng He, Sano Masamichi
Chapter 1: Industrial Engineering and Material Science
Abstract:The bubble disintegration is of great scientific importance in metal refining, In order for further improvement, Research on bubble...
97
Authors: Jun Ling Fan, De Yu Luan
Chapter 13: Modeling, Simulation and Emulation
Abstract:Computational fluid dynamics (CFD) method was applied to the study of flow field in the agitation of glycerin fluid with a Rushton impeller...
2375