- Tytuł:
- Large Eddy Simulation of turbulent flowand heat transfer in a Kenics static mixer
- Autorzy:
-
Murasiewicz, Halina
Zakrzewska, Barbara - Powiązania:
- https://bibliotekanauki.pl/articles/185383.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
heat transfer
turbulent flow
Large Eddy Simulation
CFD
static mixer
wymiana ciepła
przepływ turbulentny
Symulacja dużych wirów
mikser - Opis:
- 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.
- Źródło:
-
Chemical and Process Engineering; 2019, 40, 1; 87--99
0208-6425
2300-1925 - Pojawia się w:
- Chemical and Process Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł