TURBULENT FLOW IN STIRRED TANKS: SCALE-UP COMPUTATIONS FOR VESSEL HYDRODYNAMICS
- 1 June 1990
- journal article
- research article
- Published by Taylor & Francis in Chemical Engineering Communications
- Vol. 93 (1) , 49-73
- https://doi.org/10.1080/00986449008911436
Abstract
A numeric model for turbulent flow was used to compute the flow patterns in Rushton turbine agitated vessels. The cases considered cover two orders of magnitude for the three different scaling criteria of constant impeller Reynolds number, power input per unit mass, and impeller tip speed. The constant power input scale-up criteria maintains the turbulence levels throughout the vessel during scale-up. The circulation times, however, increase with vessel size for this scaling criteria. The other scaling criteria of constant impeller tip speed and impeller Reyonds number lead to decreasing turbulence levels in the tank along with further increases in circulation times.Keywords
This publication has 18 references indexed in Scilit:
- Calculation of Turbulent Wall Jets With an Algebraic Reynolds Stress ModelJournal of Fluids Engineering, 1980
- Numerical Software: Science or Alchemy?Published by Elsevier ,1980
- Heat and momentum transfer in the wall region of a cylindrical vessel mixed by a turbine impellerCollection of Czechoslovak Chemical Communications, 1979
- Fluid‐particle hydrodynamics in agitated vesselsThe Canadian Journal of Chemical Engineering, 1977
- Drop size distributions and coalescence frequencies of liquid‐liquid dispersions in flow vesselsAIChE Journal, 1976
- Flow phenomena in stirred tanks. Part II. The bulk of the tankAIChE Journal, 1975
- Flow phenomena in stirred tanks. Part I. The impeller streamAIChE Journal, 1975
- Flow and turbulence in a stirred tankAIChE Journal, 1966
- Fluid flow in turbine-stirred, baffled tanks—IChemical Engineering Science, 1964
- TurbulenceJournal of Applied Mechanics, 1960