Transition to turbulence in a flow of a shear-thinning viscoelastic solution in a Taylor-Couette cell
Noureddine Latrache1, Olivier Crumeyrolle, Innocent Mutabazi
1Laboratoire Brestois de Mécanique et des Systèmes (LBMS), Equipe d'Accueil 4325, Université de Brest, BP 93169, 29231 Brest Cedex 3, France.
Abstract:
The transition to turbulence in a flow of semidilute shear-thinning viscoelastic solution with a moderate elasticity was investigated in the Taylor-Couette system with a fixed outer cylinder. As the cylinder rotation frequency increases, the base flow bifurcates to a pattern of ribbons and then to disordered oscillations (DOs). Within these DOs, we have identified two particular regimes of turbulence: spatiotemporal intermittency (STI) followed by inertioelastic turbulence (IET) with a net transition between them. This transition is evidenced by a sharp peak of a diffusion velocity and a Weissenberg number.
Related Concept Videos
Couette Flow
Navier–Stokes Equations
Newtonian Fluid: Problem Solving
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
Thin-Walled Hollow Shafts
Laminar and Turbulent Flow
Steady, Laminar Flow Between Parallel Plates


