Investigations on mixing phenomena in single-phase flow in a T-junction geometry

Large-eddy simulation in a mixing tee junction: High-order turbulent statistics analysis

“…Using Particle Image Velocimetry (PIV) in an apparatus with circular cross-sections at small Reynolds numbers (<3000), Brücker (1997) measured the mean and instantaneous flow and described some of the vortical structures including the counter-rotating vortices directly downstream of the junction. Walker et al (2009) investigated mixing phenomena. They studied the distribution of the scalar mixing between pure tap water and coloured tap water for four different velocity ratios (V r ¼ V branch =V main ).…”

“…It contains two contra-rotating vortices which dominate the recirculation region. Walker et al (2009) were performed by Andersson et al (2006) using Laser Dopper Velocimetry (LDV) and thermocouples in the Vattenfall R&D experiment with water (Westin, 2006). They measured statistics of the velocity and temperature at Reynolds numbers up to 100,000.…”

Numerical study on turbulent mixing process in cross-flow type T-junction

“…Turbulent mixing in nuclear reactor cooling systems could potentially lead thermal fatigue [5] due to the fluctuating thermal field. Thermal striping has for instance been identified in light water reactors in particular as incidents of high-cycle fatigue at coolant mixing T-junctions [6].…”

Large-eddy simulation of thermal fatigue in a mixing tee

“…The study showed that the temperature difference between the hot and cold fluids of a tee junction and the enhanced heat transfer coefficient due to turbulent mixing were the dominant factors of thermal fatigue failure of a tee junction. Walker et al (2009) carried out T-junction experiments with wire mesh sensors. The straight and side branches were supplied by water of different thermal conductivity that replaced temperature in thermal mixing.…”