Details

Autor(en) / Beteiligte

• Fardin, M A
• Perge, C
• Taberlet, N
• Manneville, S

Titel

Flow-induced structures versus flow instabilities

Ist Teil von

• Physical review. E, Statistical, nonlinear, and soft matter physics, 2014-01, Vol.89 (1), p.011001-011001, Article 011001

Ort / Verlag

United States

Erscheinungsjahr

2014

Quelle

PROLA

Beschreibungen/Notizen

• The Taylor-Couette flow of a dilute micellar system known to generate shear-induced structures is investigated through simultaneous rheometry and ultrasonic imaging. We show that flow instabilities must be taken into account since both Reynolds and Weissenberg numbers may be large. Before nucleation of shear-induced structures, the flow can be inertially unstable, but once shear-induced structures are nucleated, the kinematics of the flow become chaotic, in a pattern reminiscent of the elastically dominated turbulence known in dilute polymer solutions. We outline a general framework for the interplay between flow instabilities and flow-induced structures.