A Method for Correcting Curved-Pipe Flow Effects Occurring in Coiled Capillary Viscometers
- 1 September 1973
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 44 (9) , 1231-1233
- https://doi.org/10.1063/1.1686360
Abstract
The error in viscosity measurements caused when using coiled tubes has been experimentally assessed. Previous methods for obtaining a correction factor are shown to be unreliable. A method for calculating the Dean number for an unsteady state viscometer is proposed with which the flow data obtained in a curved‐pipe can be satisfactorily correlated. Experimental results obtained using a new coiled viscometer are used to illustrate how such a correction can be applied.Keywords
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