CFD Modeling of Turbulent Jacket Heat Transfer in a Rushton Turbine Stirred Vessel

• Published in: Chemical engineering & technology 2004-03, Vol.27 (3), p.237-242
• Main Authors: Zakrzewska, B., Jaworski, Z.
• Format: Article
• Language: English
• Subjects: Applied sciences; CFD; Chemical engineering; Exact sciences and technology; Heat and mass transfer. Packings, plates; Heat transfer; Impellers; Mixing; Stirring
• ISSN: 0930-7516; 1521-4125
• DOI: 10.1002/ceat.200401988

CFD modelling of the turbulent heat transfer was performed for a stirred tank equipped with a Rushton turbine impeller and four standard baffles. Eight different turbulence models, i.e. the standard k‐ϵ, RNG k‐ϵ, realizable k‐ϵ, Chen‐Kim k‐ϵ, optimized Chen‐Kim k‐ϵ, standard k‐ω, k‐ω SST and Reynolds stress models, were used during the modelling. In all investigated cases, the boundary flow at the vessel wall was described by the standard logarithmic wall functions. The CFD modelling values of the local heat transfer coefficient were compared with the corresponding experimental data. The best agreement was obtained for the standard k‐ϵ, optimized Chen‐Kim k‐ϵ and k‐ω SST models. CFD modeling of the turbulent heat transfer was performed for a stirred tank equipped with a Rushton turbine impeller and four standard baffles. Eight different turbulence models were used during the modeling. In all investigated cases, the boundary flow at the vessel wall was described by the standard logarithmic wall functions.