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01-07-2017 | ORIGINAL ARTICLE | Issue 4/2017

Chinese Journal of Mechanical Engineering 4/2017

Effect of the Inclination of Baffles on the Power Consumption and Fluid Flows in a Vessel Stirred by a Rushton Turbine

Journal:
Chinese Journal of Mechanical Engineering > Issue 4/2017
Authors:
Youcef Kamla, Mohamed Bouzit, Houari Ameur, Mohammed Ilies Arab, Abdessalam Hadjeb

Abstract

The role of baffles in mechanically stirred tanks is to promote the stability of power drawn by the impeller and to avoid the fluid swirling, thus enhancing mixing. The present paper numerically investigates the baffles effects in a vessel stirred by a Rushton turbine. The geometric factor of interest is the baffle inclination which is varying between 25°, 32.5°, 45°, 70° and 90° at different impeller rotational speeds. The impeller rotational direction has also been varied. The vortex size and power consumption were evaluated for each geometrical configuration. It was found that the best configuration is the baffle inclination by α = 70° at a negative angular velocity.

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