Mixing of Newtonian and Non-Newtonian Fluids in a Cylindrical Mixer Equipped with a Side-Entry Impeller

详细信息    查看全文

• 作者：Jaime Sossa-Echeverria ; Fariborz Taghipour
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：November 21, 2012
• 年：2012
• 卷：51
• 期：46
• 页码：15258-15267
• 全文大小：584K
• 年卷期：v.51,no.46(November 21, 2012)
• ISSN：1520-5045

文摘

The effects of rheological properties on the mixing flow generated in a cylindrical tank equipped with a side-entry impeller were investigated using particle image velocimetry (PIV). Velocity vector maps were obtained from the laminar and transitional flow regimes of viscous Newtonian and non-Newtonian shear-thinning fluids with yield stress. Radical changes in the discharge angle were detected under the evaluated conditions. It was observed that radial discharge and a strong tangential flow arise when the viscous forces dominate the flow. Moreover, the impeller discharge is affected when the interaction between the flow and one of the walls of the vessel is significant; thus, the flow features are defined by the Reynolds number and the restrictions imposed by the walls of the tank.