Towards understanding the fluid dynamics of plane twin turbulent parallel jets
摘要
This study explores the dynamics of two-dimensional (2D) parallel jets, focusing on how various parameters affect flow behaviour. The k–ɛ standard turbulence model is used to examine jets within a rectangular domain. Key parameters include non-dimensional inter-jet spacing (S/W), non-dimensional jet width (w/W), and non-dimensional velocity (uj/Uj). This research reveals that the merged and combined points are proportional to the S/W ratio, each having distinct slopes. Recirculation zones form between the jets, creating sub-atmospheric pressure and fluid entrainment. The study analyses variations in the merge and combined points with changes in w/W and usym/Uj. w/W values of 1, 1.5, 2, and 3, and uj/Uj values of 0.83, 1, 1.16, 1.33, and 1.5 are examined. The merge and combined points show a linear relationship with changes in S/W and w/W, but this relationship is constant when the uj/Uj ratio is changed, which is a notable finding. In addition, turbulence properties are studied across all variations. This research provides insights into jet dynamics, emphasizing the significant role of inter-jet spacing and width and uncovering unexpected stability with velocity changes.