Flow of a wormlike micelle solution past a falling sphere

Nonlinear shear and extensional flow dynamics of wormlike surfactant solutions

“…The appearance of these new peaks in the power spectrum can be considered as the first sign of the onset of a more complex chaotic-like flow. In the strongly fluctuating regimes shown in extensional kinematics [52,53]. It does appear that these fluctuations are not specific to a single kinematic field but are common to all flows in which the characteristic deformation rate and micellar time scale are on the same order.…”

“…However, recent reports on flow phenomena occurring in wormlike micellar solutions, such as rising bubbles in micellar solutions [51], falling spheres and flow past spheres [52,53] or filament rupture [54,55] of wormlike micellar solutions have to take into account not only the shear flow properties, but also steady and transient elongational viscoelastic properties of the solution.…”

Brittle fracture of polymer transient networks

“…The behavior of viscoelastic samples is more complex as one may expect viscous dissipation to be enhanced and eventually dominate, thereby causing the sample to flow instead of break. However, when submitted to deformation rates larger than the inverse of their slowest relaxation times, viscoelastic fluids can break as solids do, as evidenced in several works with associative polymer networks ZHAO and MAHER a) Electronic mail: laurence.ramos@umontpellier.fr (1993); BERRET and Séréro (2001); Tripathi et al (2006); Tabuteau et al (2009); Skrzeszewska et al (2010); Tabuteau et al (2011); Foyart et al (2013), entangled wormlike micelles Rothstein (2003); Smolka and Belmonte (2003); Handzy and Belmonte (2004); Chen and Rothstein (2004); Bhardwaj et al (2007), networks combining wormlike micelles and associative polymers Foyart et al (2016), polymer melts above the glass transition Ide and White (1977); Malkin and Petrie (1997); Wang et al (2007); Huang et al (2016a,b); Shabbir et al (2016) or concentrated colloidal suspensions Smith (2015).…”

Adhesion and Growth Phenomena of Gel-like Materials Induced by Injection of NaSal into Flow of Aqueous Solution of CTAB

“…Refs. 7-9 and references therein), flow instabilities [10][11][12] , and the emergence of turbid region in various types of flows including Couette flows [13][14][15] , shear flows between parallel plates 16) , capillary flows 17) , flows past a falling sphere 18) , and contraction flows. 19,20) These phenomena are probably relevant to flow-induced gelation of micelles, whereas the relation between these phenomena and flow-induced structures of micelles is not yet clarified.…”