ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Momentum transfer in an agitated vessel with off-centred impellers

M. Cudak and J. Karcz

Department of Chemical Engineering, Faculty of Chemical Engineering, Szczecin University of Technology, PL-71 065 Szczecin, Poland

E-mail: joanka@ps.pl

Received: 31 March 2006  Revised: 7 June 2006  Accepted: 18 June 2006

Abstract: Momentum transfer was investigated in an unbaffled agitated vessel of inner diameter 0.3 m equipped with different off-centred impellers. The distribution of the shear rate on the tank wall as a function of the impeller type and Reynolds number was studied in the turbulent regime of the Newtonian liquid flow. The dependences of the averaged dimensionless shear rate, friction coefficient, and dissipated energy on the Reynolds number and eccentricity ratio were approximated using four-parameter equations.

Keywords: momentum transfer - agitated vessel - off-centred impeller - wall shear rate - Reynolds number

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-006-0068-y

Chemical Papers 60 (5) 375–380 (2006)