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EFFECT OF THE MODIFIED PITCHED BLADE TURBINES ON THE FLOW PATTERN IN STIRRED TANKS

DOI: 10.1615/ICHMT.2009.CONV.920
11 pages

Ghazi Bouzgarrou
Laboratory of Electro-mechanic Systems, National Engineering School of Sfax PB1173, Soukra 3038, Sfax, Tunisia

Zied Driss
Laboratory of Electro-mechanic Systems, National Engineering School of Sfax PB1173, Soukra 3038, Sfax, Tunisia

Wajdi Chtourou
Laboratory of Electro-mechanic Systems, National Engineering School of Sfax PB1173, Soukra 3038, Sfax, Tunisia

Mohamed Salah Abid
Laboratory of Electro-mechanic Systems, National Engineering School of Sfax PB1173, Soukra 3038, Sfax, Tunisia

Sinopsis

The hydrodynamic and turbulence model have been simulated by our computational fluid dynamics (CFD) code in a mechanically stirred tank equipped by axial turbine. The effect of the modified attack angle of the blade on the flow prediction is studied. The Reynolds-averaged continuity and Navier-Stokes equations were solved. For the closure of the above equations, a turbulence model k-ε has been employed. The numerical solution of these equations was achieved by a finite-volume method. The CFD predicted flow fields at different locations in the tank as well as the power number show reasonably good agreement with the measured data and with those calculated from published experimental correlations.

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