Numerical simulation of the mixing behaviour of hot and cold fluids in the rectangular T-junction with/without an impeller

Thermal stratification is the main reason for thermal fatigue failure in the rectangular T-junction. An impeller is set in the mixing zone in the rectangular T-junction to improve the mixing behaviour of hot and cold fluids under the deflecting jet with the inflow momentum ratio of MR = 0.49. Blade numbers and blade diameters are investigated for the range of Np = 2 ∼ 4 and Dp* = 0.33 ∼ 0.8, respectively. By the application of large-eddy...