Extrapolating time development curves of clear-water scour around piles: From empirical fitting to physics-based approach

doi:10.1016/j.oceaneng.2024.117963

IMECH-IR > 流固耦合系统力学重点实验室

	Extrapolating time development curves of clear-water scour around piles: From empirical fitting to physics-based approach
	Wang SY(王顺意); Qi WG(漆文刚); Li B(李彪); Wang Z(王展); Gao FP(高福平)
通讯作者	Qi, Wen-Gang([email protected])
发表期刊	OCEAN ENGINEERING
	2024-08-15
卷号	306 页码:11
ISSN	0029-8018
摘要	The currently available prediction formulas for the scour development around a pile predominantly rely on empirical fittings, lacking clear physical mechanisms. This study integrates the principle of sediment mass conservation, the flat-bed sediment transport model, and the phenomenological theory of turbulence to propose a semi-analytical model for predicting clear-water scour development around circular piles. This model overcomes scale-related issues and is governed by three fundamental parameters: the equilibrium scour depth, the characteristic time, and the ratio of the scour depth coefficient to the primary horseshoe vortex coefficient. The results demonstrate that the proposed model is consistent with experimental data. The proposed model offers significant improvements by addressing two critical issues observed in existing models: (i) empirical formulas expressed purely in mathematical terms exhibit low prediction accuracy for long-term scour, resulting in underestimation of the extrapolated equilibrium scour depth and premature attainment of equilibrium conditions; (ii) other models exhibit a divergence phenomenon, where the extrapolated equilibrium scour depth greatly exceeds the pile diameter, contradicting prevailing understanding. Applying the proposed model allows for a substantial reduction in test duration while accurately capturing the subsequent scour development process.
关键词	Local scour Phenomenological theory of turbulence Scour development Sediment transport Clear-water scour
DOI	10.1016/j.oceaneng.2024.117963
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001239446900001
关键词[WOS]	DEPENDENT LOCAL SCOUR ; TEMPORAL VARIATION ; HORSESHOE VORTEX ; BRIDGE ; FLOW ; EVOLUTION ; MONOPILE ; SCALE ; MODEL ; PIER
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[11972036] ; National Natural Science Foundation of China[11825205] ; Youth Innovation Promotion Association CAS[2021018]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
论文分区	一类
力学所作者排名	1
RpAuthor	Qi, Wen-Gang
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/95603
专题	流固耦合系统力学重点实验室
推荐引用方式 GB/T 7714	Wang SY,Qi WG,Li B,et al. Extrapolating time development curves of clear-water scour around piles: From empirical fitting to physics-based approach[J]. OCEAN ENGINEERING,2024,306:11.Rp_Au:Qi, Wen-Gang
APA	王顺意,漆文刚,李彪,王展,&高福平.(2024).Extrapolating time development curves of clear-water scour around piles: From empirical fitting to physics-based approach.OCEAN ENGINEERING,306,11.
MLA	王顺意,et al."Extrapolating time development curves of clear-water scour around piles: From empirical fitting to physics-based approach".OCEAN ENGINEERING 306(2024):11.