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

doi:10.1016/j.oceaneng.2024.117963

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	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)
刊名	OCEAN ENGINEERING
	2024-08-15
卷号	306 页码:11
关键词	Local scour Phenomenological theory of turbulence Scour development Sediment transport Clear-water scour
ISSN号	0029-8018
DOI	10.1016/j.oceaneng.2024.117963
通讯作者	Qi, Wen-Gang(qiwengang@imech.ac.cn)
英文摘要	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.
分类号	一类
资助项目	National Natural Science Foundation of China[11972036] ; National Natural Science Foundation of China[11825205] ; Youth Innovation Promotion Association CAS[2021018]
WOS关键词	DEPENDENT LOCAL SCOUR ; TEMPORAL VARIATION ; HORSESHOE VORTEX ; BRIDGE ; FLOW ; EVOLUTION ; MONOPILE ; SCALE ; MODEL ; PIER
WOS研究方向	Engineering ; Oceanography
语种	英语
WOS记录号	WOS:001239446900001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
其他责任者	Qi, Wen-Gang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/95602]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
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.
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.