Mixing time of a non-Newtonian liquid in an unbaffled agitated vessel with an eccentric propeller

Szoplik, Jolanta and Karcz, Joanna Mixing time of a non-Newtonian liquid in an unbaffled agitated vessel with an eccentric propeller Chemical Papers, Vol.62, No. 1, 2008, 70-77

Document type: Článok z časopisu / Journal Article
Collection: Chemical papers  

Author(s) Szoplik, Jolanta
Karcz, Joanna
Title Mixing time of a non-Newtonian liquid in an unbaffled agitated vessel with an eccentric propeller
Journal name Chemical Papers
Publication date 2008
Year available 2008
Volume number 62
Issue number 1
ISSN 0366-6352
Start page 70
End page 77
Place of publication Poland
Publisher Versita
Collection year 2008
Language english
Subject 290000 Engineering and Technology
290600 Chemical Engineering
Abstract/Summary Experimental study of mixing time of non-Newtonian shear-thinning fluids within the transitional regime (3 × 102 < Re < 3 × 103) of liquid flow is presented. The purpose of this study was to analyze the effect of eccentricity and pumping mode of the impeller as well as of position of the tracer dosage point into the agitated liquid on mixing time. The measurements were conducted in an unbaffled agitated vessel with inner diameter D = 0.7 m equipped with an up-or down-pumping propeller located centrically (e/R = 0) or eccentrically (e/R ≠ 0) in the vessel. Experiments were carried out by means of computer-aided unsteady-state thermal method for three positions of the tracer dosage point. The experimental data show that eccentric position of the propeller in an unbaffled vessel causes a decrease of the mixing time compared to that obtained in a vessel with a centrically located propeller. Mixing time depends also on the pumping mode of the propeller as well as on the position of the tracer dosage point.
 
Related Links
Link Description
http://www.springerlink.com/content/g5l311p34226n540/?p=5330bcf5b3c34bd48d5b3...   fulltext  
 
 
User Comments
 
Access Statistics: 0 Abstract Views Detailed Statistics
Created: Thu, 18 Mar 2010, 10:27:49 CET by Jana Taptičová . Detailed History