Large Eddy Simulation of turbulent flowand heat transfer in a Kenics static mixer

• Autorzy: Murasiewicz Halina , Zakrzewska Barbara

Identyfikatory

DOI

10.24425/cpe.2019.126103

• Języki publikacji: EN

Abstrakty

EN

CFD modelling of momentum and heat transfer using the Large Eddy Simulation (LES) approach hasbeen presented for a Kenics static mixer. The simulations were performed with the commercial codeANSYS Fluent 15 for turbulent flow of three values of Reynoldsnumber,Re=5 000, 10 000 and18 000. The numerical modelling began in the RANS model, where standardk−εturbulence modeland wall functions were used. Then the LES iterations started from the initial velocity and temperaturefields obtained in RANS. In LES, the Smagorinsky–Lilly modelwas used for the sub-grid scalefluctuations along with wall functions for prediction of flowand heat transfer in the near-wall region.The performed numerical study in a Kenics static mixer resulted in highly fluctuating fields of bothvelocity and temperature. Simulation results were presented and analysed in the form of velocity andtemperature contours. In addition, the surface-averaged heat transfer coefficient values for the wholeinsert length were computed and compared with the literature experimental data. Good compliance ofthe LES simulation results with the experimental correlation was obtained.

Słowa kluczowe

EN

heat transfer; turbulent flow; Large Eddy Simulation; CFD; static mixer

PL

wymiana ciepła; przepływ turbulentny; symulacja dużych wirów; CFD; mikser

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2019
• Tom: Vol. 40, nr 1
• Strony: 87–--99
• Opis fizyczny: Bibliogr. 38 poz., tab., rys.

Twórcy

autor

Murasiewicz Halina

• West Pomeranian University of Technology, Szczecin, Institute of Chemical Engineeringand Environmental Protection Processes, al. Piastów 42, 71-065 Szczecin, Poland

autor

Zakrzewska Barbara

• West Pomeranian University of Technology, Szczecin, Institute of Chemical Engineeringand Environmental Protection Processes, al. Piastów 42, 71-065 Szczecin, Poland

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).