Non-Isothermal Vortex Flow in the T-Junction Pipe

Abstract

The numerical simulation approach of heat carrier mixing regimes in the T-junction shows that the RANS approach is beneficial for a qualitative flow analysis to obtain relatively agreed averaged velocity and temperature. Moreover, traditionally, the RANS approach only predicts the averaged temperature distribution. This mathematical model did not consider the temperature fluctuation variations important for the thermal fatigue task. It should also be emphasized that unlike the LES approach, the steady RANS approach cannot express a local flow structure in intense mixing zones. Nevertheless, apparently the adopted RANS approach should be used for assessing the quality of computational meshes, boundary conditions with the purpose to take LES for further numerical simulation.

Numerical Investigation of Hydrodynamics in Inline Mixers

“…This vortex structure created a backflow which was also observed experimentally in previous work by Walker et al, [9]. Better vortices resolution might be further observed using a more advanced turbulence model such as large eddy simulation (LES) [11]. An insignificant difference in hydrodynamic region length for the injection mixer type was identified based on CFD simulation results in Figure 6.…”

“…Numerous studies have been conducted to investigate hydrodynamics and mixing characteristics of inline mixers, especially T-type inline mixers, using experimental approaches [7][8][9][10][11]. Utilization of CFD analysis has been proven to improve the understanding of hydrodynamics and mixing phenomena happening inside inline mixers as presented by several previous studies [7,8,[12][13][14][15][16][17].…”