Quraishi, A. Q. ; Mashelkar, R. A. ; Ulbrecht, J. (1976) Torque suppression in mechanically stirred liquids and multiphase liquid systems Journal of Non-Newtonian Fluid Mechanics, 1 (3). pp. 223-245. ISSN 0377-0257
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/037702...
Related URL: http://dx.doi.org/10.1016/0377-0257(76)80022-5
Abstract
Both polymeric and fibrous drag-reducing additives can be used to suppress the torque of agitators operating in a turbulent regime. Unlike the tubular flow, the influence of the fibrous additive is stronger than that of the polymer but their combined action seems to be additive. The action of the drag-reducing additives is further enhanced by the presence of a second phase (gaseous or liquid) in the stirred tank. In aerated tanks, the torque on the shaft of the agitator is not only reduced by more than 70% but also the flooding point is shifted to higher gas rates. An application of this phenomenon to fermentation tanks and similar technologies has been suggested.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 22154 |
| Deposited On: | 23 Nov 2010 08:13 |
| Last Modified: | 06 Jun 2011 10:46 |
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