title: Multiscale laminar flows with turbulentlike properties.
abstract: By applying fractal electromagnetic force fields on a thin layer of brine, we generate steady quasi-two-dimensional laminar flows with multiscale stagnation point topology. This topology is shown to control the evolution of pair separation (Delta) statistics by imposing a turbulentlike locality based on the sizes and strain rates of hyperbolic stagnation points when the flows are fast enough, in which case Delta(2) approximately t(gamma) is a good approximation with gamma close to 3. Spatially multiscale laminar flows with turbulentlike spectral and stirring properties are a new concept with potential applications in efficient and microfluidic mixing.
authors.affiliation: Imperial College London, London SW7 2AZ, United Kingdom.
authors.forename: Lionel
authors.initials: L
authors.lastname: Rossi
authors.forename: J C
authors.initials: JC
authors.lastname: Vassilicos
authors.forename: Yannis
authors.initials: Y
authors.lastname: Hardalupas