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http://dx.doi.org/10.5293/kfma.2013.16.1.047

A Numerical Analysis on Mixing Performance for Various Types of Turbine Impeller in a Stirred Vessel  

Choi, Younguk (서강대학교, 기계공학과)
Choi, Jongrak (서강대학교, 기계공학과)
Kim, Daejoong (서강대학교, 기계공학과)
Hur, Nahmkeon (서강대학교, 기계공학과)
Publication Information
The KSFM Journal of Fluid Machinery / v.16, no.1, 2013 , pp. 47-55 More about this Journal
Abstract
In the present study, a numerical simulation to analyze mixing performance inside an industrial mixer was investigated for various geometry of turbine impellers. Various pitching angles and various types of turbine blades were considered in the simulation. In order to model the rotation of impeller, the Multiple Reference Frames (MRF) technique was used. For evaluation of the effect of various shapes on the mixing performance, dimensionless coefficient such as flow coefficient, circulation coefficient, power coefficient, pumping effectiveness and circulation effectiveness were used. From the results, the effect of pitching angle of a pitched turbine impeller was to give best pumping effectiveness around $30^{\circ}$ pitching angle, whereas best circulation effectiveness around $65^{\circ}$ pitching angle. Dual pitched turbine impeller showed best performance in both pumping effectiveness and circulation effectiveness among impeller types considered in the present study.
Keywords
Mixers; Mixing Performance; Turbine Impeller; Computational Fluid Dynamics; Multiple Reference Frames;
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