title: Identification of complex flows in Taylor-Couette counter-rotating cavities.
abstract: The transition in confined rotating flows is a topical problem with many industrial and fundamental applications. The purpose of this study is to investigate the Taylor-Couette flow in a finite-length cavity with counter-rotating walls, for two aspect ratios L=5 or L=6. Two complex regimes of wavy vortex and spirals are emphasized for the first time via direct numerical simulation, by using a three-dimensional spectral method. The spatio-temporal behavior of the solutions is analyzed and compared to the few data actually available.
authors.affiliation: LMSNM, FRE 2405 CNRS--Universites d'Aix-Marseille, IMT, La Jetee-Technopole de Chateau-Gombert, Marseille, France.
authors.forename: O
authors.initials: O
authors.lastname: Czarny
authors.forename: E
authors.initials: E
authors.lastname: Serre
authors.forename: P
authors.initials: P
authors.lastname: Bontoux
authors.forename: R M
authors.initials: RM
authors.lastname: Lueptow
mesh_terms: D018504:Ecological Systems, Closed; D008021:Life Support Systems; D008433:Mathematics; D008962:Models, Theoretical; D012212:Rheology; D012498:Sanitary Engineering; D014865:Waste Disposal, Fluid; D014872:Water Movements; D018508:Water Purification