Laboratory and Computational Fluid Dynamics Investigation of Homogenization in a Tank Stirred by External Pump

  • Janka Bobek Department of Chemical Engineering Science, Faculty of Engineering, University of Pannonia, H-8200 Veszprém, Egyetem str. 10, Hungary
  • Attila Egedy Department of Chemical Engineering Science, Faculty of Engineering, University of Pannonia, H-8200 Veszprém, Egyetem str. 10, Hungary
  • Dóra Rippel-Pethő Department of Chemical Engineering Science, Faculty of Engineering, University of Pannonia, H-8200 Veszprém, Egyetem str. 10, Hungary

Abstract

The scope of this study was to investigate the homogenization of a two-layer stratified liquid in a tank where liquid stirring was achieved by carrying out external recirculation. Furthermore, the aim of the research was to observe the effect of the height of the outlet during the time of mixing one. The experimental fluid was two-layer, density stratified liquid. From the perspective of homogeneity, the effect of the height of the outlet was investigated in laboratory. Moreover, the experimental device was modeled in CFD. In simulation examination, laminar - and k-ε-model were used, and the influence of the outlet position was observed. The difference was remarkable in the first part of the measurement caused by the presence of sharp concentration variation in the tank. After the operating time, the expected homogeneity was fulfilled at the outlet in all cases. Regarding of CFD research, the results suggest that the laminar model is more effective to describe the concentration changes at the sampling point in the tank investigated.

Keywords: stratified liquid, recirculation, homogenization, laminar model, k-ε model
Published online
2019-12-10
How to Cite
[1]
Bobek, J., Egedy, A. and Rippel-Pethő, D. ONLINE. Laboratory and Computational Fluid Dynamics Investigation of Homogenization in a Tank Stirred by External Pump. Periodica Polytechnica Chemical Engineering. (ONLINE). https://doi.org/10.3311/PPch.14683.
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Articles