A model of transient mixing in a stirred tank

Abstract A model describing two-dimensional transient mixing phenomena of a single-phase fluid within a stirred tank has been developed. The model employs a k − e turbulence model and uses Lagrangian tracer particles as indicators of mixing behavior. Calculations over a relatively coarse (20 × 30) mesh containing 4800 tracer particles are capable of producing a realistic depiction of slurry mixing behavior in a large-scale industrial vessel.

[1]  Ralph W. Pike,et al.  Fluid Dynamics and Flow Patterns in Stirred Tanks With a Turbine Impeller. , 1972 .

[2]  P. Smolarkiewicz.  A Fully Multidimensional Positive Definite Advection Transport Algorithm with Small Implicit Diffusion , 1984 .

[3]  Lawrence L. Tavlarides,et al.  Turbulent flow in stirred tanks. Part I: Turbulent flow in the turbine impeller region , 1985 .

[4]  R. Kuboi,et al.  FLUID AND PARTICLE MOTION IN TURBULENT DISPERSION--1. MEASUREMENT OF TURBULENCE OF LIQUID BY CONTINUAL PURSUIT OF TRACER PARTICLE MOTION , 1974 .

[5]  L. A. Cutter.  Flow and turbulence in a stirred tank , 1966 .

[6]  R. Pike,et al.  Three-dimensional turbulent flow in agitated vessels with a nonisotropic viscosity turbulence model , 1990 .

[7]  Gary B. Tatterson,et al.  Fluid mixing and gas dispersion in agitated tanks , 1991 .

[8]  Lawrence L. Tavlarides,et al.  Fluid-particle hydrodynamics in agitated vessels , 1977 .

[9]  W. Jones,et al.  The prediction of laminarization with a two-equation model of turbulence , 1972 .

[10]  T. A. Engh,et al.  Flow induced by an impeller in an unbaffled tank—II. Numerical modelling , 1994 .

[11]  J. C. Middleton,et al.  Computations of flow fields and complex reaction yield in turbulent stirred reactors, and comparison with experimental data , 1986 .

[12]  Stuart E. Rogers,et al.  Steady-state modeling and experimental measurement of a baffled impeller stirred tank , 1995 .

[13]  Suzanne M. Kresta,et al.  Prediction of the three-dimensional turbulent flow in stirred tanks , 1991 .

[14]  C. W. Hirt,et al.  Improved free surface boundary conditions for numerical incompressible-flow calculations , 1971 .

[15]  Ivan Fořt,et al.  Turbulent flow in stirred tanks. Part II: A two‐scale model of turbulence , 1986 .