Untersuchung der Bildung, des Wachstums und der Bewegung von Tropfen aus komplexen Flüssigkeiten

作者: Stephan Erwin Gier

DOI: 10.22028/D291-25625

关键词:

摘要: In the present work, behaviour of polymer solutions was investigated in elongational flows at formation, growth and movement drops. A relationship terms a scaling law between first normal stress difference received from shear measurements (rheometer) relaxation time determined by (CaBER) found; this could be proved simple model. For droplets emerging filament solution during thinning differences formation shown. this, different mechanisms were postulated. Moreover, flow profile visualized characterized. Here, it shown that qualitatively changes course but end measurement, corresponds to an flow. Furthermore small which are brought into contact with stationary moving liquid surfaces analyzed. significant Newtonian non-Newtonian liquids

参考文章(66)
L. R. Saetran, M. M. Mielnik, Micro particle image velocimetry : an overview Turbulence : international journal. ,vol. 10, pp. 83- 90 ,(2004)
R. Byron Bird, Dynamics of Polymeric Liquids ,(1977)
A. Zell, S. Gier, S. Rafaï, C. Wagner, Is there a relation between the relaxation time measured in CaBER experiments and the first normal stress coefficient Journal of Non-newtonian Fluid Mechanics. ,vol. 165, pp. 1265- 1274 ,(2010) , 10.1016/J.JNNFM.2010.06.010
Vance Bergeron, Daniel Bonn, Jean Yves Martin, Louis Vovelle, Controlling droplet deposition with polymer additives Nature. ,vol. 405, pp. 772- 775 ,(2000) , 10.1038/35015525
M Stelter, Günter Brenn, AL Yarin, RP Singh, Franz Durst, None, Investigation of the elongational behavior of polymer solutions by means of an elongational rheometer Journal of Rheology. ,vol. 46, pp. 507- 527 ,(2002) , 10.1122/1.1445185
M Stelter, Günter Brenn, AL Yarin, RP Singh, Franz Durst, None, Validation and application of a novel elongational device for polymer solutions Journal of Rheology. ,vol. 44, pp. 595- 616 ,(2000) , 10.1122/1.551102
Suzanne I. Lieber, Melissa C. Hendershott, Apichart Pattanaporkratana, Joseph E. Maclennan, Self-organization of bouncing oil drops: two-dimensional lattices and spinning clusters. Physical Review E. ,vol. 75, pp. 056308- ,(2007) , 10.1103/PHYSREVE.75.056308
Pierre J. Carreau, Rheological Equations from Molecular Network Theories Transactions of the Society of Rheology. ,vol. 16, pp. 99- 127 ,(1972) , 10.1122/1.549276
Jens Eggers, Universal pinching of 3D axisymmetric free-surface flow Physical Review Letters. ,vol. 71, pp. 3458- 3460 ,(1993) , 10.1103/PHYSREVLETT.71.3458