Numerical Simulation of Flow and Heat Transfer with Large-Eddy Simulation in a Mixing T-Junction

Abstract

<jats:p>In the present paper, large-eddy simulation (LES) based on commercial computational fluid dynamics (CFD) software FLUENT for prediction of flow and heat transfer in a mixing T-junction was completed. Mean and root mean square (RMS) temperature and velocity were defined to describe the distributions and fluctuations of temperature and velocity. Numerical results indicate that profiles between symmetrical planes are almost same and the root mean square temperature and velocity close to the center of the main duct in the downstream are larger than those near the main duct wall. The prediction of the fluctuations of temperature and velocity is significant to understand the knowledge of the cause of thermal fatigue in a mixing T-junction.</jats:p>

Numerical Simulation of Thermal Fluctuation of Hot and Cold Fluids Mixing in a Tee Junction

“…Thermal striping phenomena in the tee junction had been numerically investigated using LES by Hu and Kazimi [7] for two different mixing cases, and the simulated normalized mean and root-mean square (RMS) was consistent with experimental results. Large-eddy simulation have been used by Lu et al [8] to predict the fluctuations of temperature and velocity in a mixing T-junction to understand the cause of thermal fatigue.…”