title: Hydrodynamics and mass transfer of the coaxial jet mixer in flow injection analysis.
abstract: A coaxial jet mixer that was previously proposed for rapid and efficient mixing under laminar flow conditions has been studied both theoretically and experimentally. A mathematical model that consists of a set of Navie-Stokes equations that determine the flow velocities and three diffusion-convection reaction equations that determine the reactant and product concentrations has been developed. Equations are solved with the help of finite difference techniques for different flow conditions. The quality of sample and reagent mixing is characterized by the mean product concentration and the amount of product produced. Theoretical results are compared with experimental ones for the mixing of bromothymol blue (a pH indicator) in the outer capillary with NaOH in the inner capillary of the jet mixer.
authors.affiliation: Institute for Analytical Instrumentation, Russian Academy of Sciences, 26 Rigsky pr., St. Petersburg 198103, Russia, Department of Hydrodynamics, St. Petersburg State Technical University, 29 Polytechnicheskaya st., St. Petersburg 195251, Russia, and Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700.
authors.forename: V P
authors.initials: VP
authors.lastname: Andreev
authors.forename: S B
authors.initials: SB
authors.lastname: Koleshko
authors.forename: D A
authors.initials: DA
authors.lastname: Holman
authors.forename: L D
authors.initials: LD
authors.lastname: Scampavia
authors.forename: G D
authors.initials: GD
authors.lastname: Christian