Finite Element Analysis of a Flow Induced by a Rushton Turbine in an Unbaffled Stirred Vessel

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yoshikazu Kato¹  Sayaka Okuzaki²  Takuya Kubo²  Daisuke Hitomi²  Hitoshi Sugiyama² 

[1] Mixing Technology Research Laboratory, Satake Chemical Equipment MFG, Ltd.;Department of Energy and Environmental Science, Utsunomiya University

关键词: Finite Element Method;    Rushton Disc Turbine;    Stirred Vessels;    Rankin’s Vortex;    CFD;   

DOI  :  10.1252/jcej.39.275

来源: Maruzen Company Ltd

【 摘 要 】

References(23)Cited-By(3)A numerical analysis for a flow induced by the Rushton disc turbine was done by a finite element method. As flows in the vessel depend on the geometry of the impellers and the vessels, unstructured mesh was used in order to consider their geometries accurately. Moreover, elements used were a hybrid composed of tetrahedral and prism, which could be resolved boundary layer near the impeller and the shaft. Turbulence models used were k–ε and k–ω models and their governing equations were also discretized by the Characteristic-Galerkin method that includes stabilizing terms as well as the momentum equation. Calculated results were compared with the experimental result. The doubleloop pattern in the r–z cross-section could be reproduced by both turbulence models, though with stronger circulation patterns. It was found that the k–ω model could reproduce the Rankin’s vortex qualitatively, while the k–ε model could not even qualitatively.

【 授权许可】

Unknown