title: Measuring nonextensitivity parameters in a turbulent Couette-Taylor flow.
abstract: We investigate probability density functions of velocity differences at different distances r measured in a Couette-Taylor flow for a range of Reynolds numbers Re. There is good agreement with the predictions of a theoretical model based on nonextensive statistical mechanics (where the entropies are nonadditive for independent subsystems). We extract the scale-dependent nonextensitivity parameter q(r,Re) from the laboratory data.
authors: School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, United Kingdom.
authors: C
authors: C
authors: Beck
authors: G S
authors: GS
authors: Lewis
authors: H L
authors: HL
authors: Swinney