Angular momentum transport and turbulence in laboratory models of Keplerian flows

M.S. Paoletti, Dennis Paulus Maria van Gils, B. Dubrulle, Chao Sun, Detlef Lohse, D.P. Lathrop

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)
39 Downloads (Pure)

Abstract

We present angular momentum transport (torque) measurements in two recent experimental studies of the turbulent flow between independently rotating cylinders. In addition to these studies, we reanalyze prior torque measurements to expand the range of control parameters for the experimental Taylor-Couette flows. We find that the torque may be described as a product of functions that depend only on the Reynolds number, which describes the turbulent driving intensity, and the rotation number, which characterizes the effects of global rotation. For a given Reynolds number, the global angular momentum transport for Keplerian-like flow profiles is approximately 14% of the maximum achievable transport rate. We estimate that this level of transport would produce an accretion rate of Ṁ/Ṁ0~10-3 in astrophysical disks. We argue that this level of transport from hydrodynamics alone could be significant. We also discuss the possible role of finite-size effects in triggering or sustaining turbulence in our laboratory experiments
Original languageEnglish
Article numberA64
Pages (from-to)1-11
Number of pages11
JournalAstronomy & astrophysics
Volume547
Issue numberA64
DOIs
Publication statusPublished - 2012

Keywords

  • IR-83138
  • METIS-292961

Fingerprint Dive into the research topics of 'Angular momentum transport and turbulence in laboratory models of Keplerian flows'. Together they form a unique fingerprint.

  • Cite this