Hydrodynamic turbulence in quasi Keplerian rotating flows Journal Article

Author(s): Shi, Liang; Hof, Björn; Rampp, Markus; Avila, Marc
Article Title: Hydrodynamic turbulence in quasi Keplerian rotating flows
Affiliation IST Austria
Abstract: We report a direct-numerical-simulation study of the Taylor-Couette flow in the quasi-Keplerian regime at shear Reynolds numbers up to (105). Quasi-Keplerian rotating flow has been investigated for decades as a simplified model system to study the origin of turbulence in accretion disks that is not fully understood. The flow in this study is axially periodic and thus the experimental end-wall effects on the stability of the flow are avoided. Using optimal linear perturbations as initial conditions, our simulations find no sustained turbulence: the strong initial perturbations distort the velocity profile and trigger turbulence that eventually decays.
Journal Title: Physics of Fluids
Volume: 29
Issue 4
ISSN: 1089-7666
Publisher: American Institute of Physics  
Date Published: 2017-04-01
Start Page: Article number: 044107
Sponsor: Deutsche Forschungsgemeinschaft (DFG, Germany) under Grant No. SFB963/1 (Project No. A8)
DOI: 10.1063/1.4981525
Notes: Computing time was allocated through the PRACE DECI-10 Project HYDRAD and by the Max Planck Computing and Data Facility (Garching, Germany).
Open access: yes (repository)