TURBULENT FLOW OF MILDLY VISCOELASTIC LIQUIDS IN CURVED TUBES

The turbulent flow of mildly viscoelastic liquids in curved lubes is analyzed using boundary layer approximations. The momentum integral approach is used and the governing equations are solved numerically by the Runge-Kutta-Merson technique. The influence of Deborah number on the velocity distributi...

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Veröffentlicht in:Chemical engineering communications 1980-01, Vol.5 (5-6), p.269-286
Hauptverfasser: SHENOY, A.V., RANADE, V.R., ULBRECHT, J.J.
Format: Artikel
Sprache:eng
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Zusammenfassung:The turbulent flow of mildly viscoelastic liquids in curved lubes is analyzed using boundary layer approximations. The momentum integral approach is used and the governing equations are solved numerically by the Runge-Kutta-Merson technique. The influence of Deborah number on the velocity distribution and the boundary layer thickness has been studied for the first time. The theoretically developed expression for frictional losses was checked with available experimental data and sound agreement was found. The results of this analysis are likely to find application in the biomedical fluid mechanics and in the analysis of the flow with so-called "drag reducing" additives.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986448008935969