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Warianty tytułu
Konferencja
Third International Conference on Engineering Rheology, ICER 2005
Języki publikacji
Abstrakty
The effect of the local frictions on drag reduction in a flow of surfactant solutions in the pipeline system has been studied. The experimental tests for aqueous solutions of hexadecyltrimethylammonium chloride of the concentration of 50, 100 and 150ppm, have been carried out. The flow in straight tubes as well in the pipeline system elements such as elbows and sudden contraction in cross-section has been tested. On the basis of the experimental data it was shown that the presence of the elements giving the local resistances in the pipeline system will bring about the decrease in flow drag reduction effect. The effect can be explained by existing in the systems tested the additional stresses caused by the constructional elements. The additional stresses cause the partial destruction of the shear induced structure SIS (responsible for the flow stabilization) and the decrease of the drag reduction effect.
Rocznik
Tom
Strony
69--75
Opis fizyczny
Bibliogr. 13 poz., rys., tab., wykr.
Twórcy
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznan University of Technology, PL 60-965 Poznań, POLAND
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznan University of Technology, PL 60-965 Poznań, POLAND
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznan University of Technology, PL 60-965 Poznań, POLAND
Bibliografia
- [1] Aquilar G. et al. (2001): Asymptotes of maximum friction and heat transfer reductions for drag-reducing surfactant s. - Int. J. Heat Mass Transfer, vol.44, No. 15, pp.2835-2843.
- [2] Bandyopadhyay R. and Sood, A. (2001): Chaotic dynamics in shear-thickening surfactant Solutions. - Europhys. Letter, vol. 56. pp.447-453.
- [3] Broniarz-Press L. et al. (2002): Flow ofthe surfactant's Solutions in coils. - Proc. 6th Europ. Conf. Rheology, Erlangen pp.563-564.
- [4] Broniarz-Press L. and Różański J. (2002): Mcucimal drag reduction regions for the flow of both polymer's and nt’s Solutions in straightpipę. - Proc. 15th Int. Congr. Chem. Process Eng. Chisa’2002, Praha, No.0187.
- [5] Broniarz-Press L. and Różański J. (2004): Region of mcucimal drag reduction in flow of surfactant Solutions. - Chem. ; Eng., vol.25, No.3/1, pp.733-738.
- [6] Gasljevic K. and Matthys E. (1999): Improved ąuantification of the drag reduction phenomenon through turbulence non parameters. - J. Non-Newtonian Fluid Mechanics, vol.84, No.2, pp. 123-130.
- [7] Metzner A. and Reed J. (1955): Flow of non-Newtonian fluids - correlation ofthe laminar, transition, and turbulent- r regions. - AIChE J., vol.l, No.4, pp.434-440.
- [8] Munson B. et al. (1994): Fundamentals of Fluid Mechanics. - New York: Wiley & Sons.
- [9] Ohlendorf D. et al. (1986): Surfactant systems for drag reduction: physico-Chemical properties and rheological behaviour. - Rheol. Acta, vol.25, No.5, pp.468-486.
- [10] Weber M. et al. (1991): Warmeubergang und Druckverlust wasseriger Tensidelósungen in Rohrwendeln. - Forschung t Ingenieurwesen, vol.57, No.4, pp.l 12-118.
- [11] White A. (1967): Flow characteristics of complex soap systems. - Naturę, vol.214, pp.585-592.
- [12] Zakin J. et al. (1996): New limiting drag reduction and velocity profile asymptotes for nonpolymeric additives systems. -AIChE J., vol.42, No. 12, pp.3544-3546.
- [13] Zakin J. et al. (2002): Review ofrecent experimental results and evaluation of physical criteria reąuired for surfactant drag reduction. - Proc. 15th Int. Congr. Chem. Process Eng. Chisa’2002, Praha, No.0724.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0015-0033