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Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets

Hao Chen1,2, Xianbin Teng2,*, Zhibin Zhang2, Faxin Zhu1, Jie Wang1, Zhaohao Zhang2

1 School of Naval Architecture and Maritime, Zhejiang Ocean University, Zhoushan, 316022, China
2 School of Marine Engineering, Guangzhou Maritime University, Guangzhou, 510725, China

* Corresponding Author: Xianbin Teng. Email: email

(This article belongs to this Special Issue: High Pressure Jet Theory and its Applications)

Fluid Dynamics & Materials Processing 2024, 20(2), 429-445. https://doi.org/10.32604/fdmp.2023.030585

Abstract

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.

Graphical Abstract

Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets

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Cite This Article

Chen, H., Teng, X., Zhang, Z., Zhu, F., Wang, J. et al. (2024). Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets. FDMP-Fluid Dynamics & Materials Processing, 20(2), 429–445.



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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