TY  - EJOU
AU  - Chen, Hao 
AU  - Teng, Xianbin 
AU  - Zhang, Zhibin 
AU  - Zhu, Faxin 
AU  - Wang, Jie 
AU  - Zhang, Zhaohao 

TI  - Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets
T2  - Fluid Dynamics \& Materials Processing

PY  - 2024
VL  - 20
IS  - 2
SN  - 1555-2578

AB  - Water jet technology is widely used in submerged buried pipes as a non-traditional trenching process, often involving a complex sediment response. An important adjustable and influential engineering variable in this technology is represented by the impinging distance. In this study, the FLOW-3D software was used to simulate the jet scouring of sand beds in a submerged environment. In particular, four sets of experimental conditions were considered to discern the relationship between the maximum scour depth and mass and the impinging distance. As shown by the results, a critical impinging distance  exists by which the static scour depth can be maximized; the scour mass ratio between dynamic and static conditions decreases as the impinging distance increases. Moreover, the profile contours are similar when the erosion parameter  is in the range 0.35 <  < 2. Empirical equations applicable for predicting the jet trenching contour under both dynamic and static scour modes are also provided in this study.
KW  - Submerged jet; impinging distance; numerical simulation; scour depth; scour profile

DO  - 10.32604/fdmp.2023.030585