[en] The dynamics of elasto-inertial turbulence (EIT) is investigated numerically from the perspective of the coupling between polymer dynamics and flow structures. In particular, direct numerical simulations of channel flow with Reynolds numbers ranging from 1000 to 6000 are used to study the formation and dynamics of elastic instabilities and their effects on the flow. Based on the splitting of the pressure into inertial and polymeric contributions, it is shown that the trains of cylindrical structures around thin sheets of high polymer extension that are characteristics to elasto-inertial turbulence are mostly driven by polymeric contributions.
Disciplines :
Mechanical engineering
Author, co-author :
Terrapon, Vincent ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Modélisation et contrôle des écoulements turbulents
Dubief, Yves; University of Vermont
Soria, Julio; Monash University
Language :
English
Title :
Elasto-inertial turbulence in polymeric flows
Publication date :
26 November 2013
Event name :
66th Annual Meeting of the APS Division of Fluid Dynamics (Volume 58, Number 18)
