A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impact of two-dimensional seepage flow on sediment incipient motion under waves
https://orcid.org/0000-0001-6275-2775
https://orcid.org/0000-0003-0199-0918
Highlights Effects of wave-induced seepage on the sediment incipient motion are obtained by analytical and numerical methods. New definition of Shields number with two-dimensional seepage. The influence of seepage flow on sediment incipient motion would be underestimated if the horizontal seepage force is ignored. The influence of seepage flow on sediment incipient motion would remarkably increase with the increased wave height, shear modulus, permeability.
Abstract A small seepage could cause significant changes to the hydrodynamic gradient and further enhance the sediment incipient motion and scour. However, most previous studies either ignored the influence of seepage or only considered the upward seepage in the prediction of sediment incipient motion. In this paper, a modified Shields number considering the two-dimensional seepage was derived. The analytical solution and numerical model were used to analyse the influence of wave-induced seepage on sediment incipient motion. The results indicated that two-dimensional seepage promoted the sediment incipient motion near wave troughs and restrained it near wave crests. The influence of seepage on sediment incipient motion would be underestimated if the horizontal seepage force was ignored. Meanwhile, it was found that the lower water depth and saturation, higher wave height, shear modulus and permeability in -direction would remarkably increase the seepage force and then enhance the mobility of seabed particles.
Impact of two-dimensional seepage flow on sediment incipient motion under waves
https://orcid.org/0000-0001-6275-2775
https://orcid.org/0000-0003-0199-0918
Highlights Effects of wave-induced seepage on the sediment incipient motion are obtained by analytical and numerical methods. New definition of Shields number with two-dimensional seepage. The influence of seepage flow on sediment incipient motion would be underestimated if the horizontal seepage force is ignored. The influence of seepage flow on sediment incipient motion would remarkably increase with the increased wave height, shear modulus, permeability.
Abstract A small seepage could cause significant changes to the hydrodynamic gradient and further enhance the sediment incipient motion and scour. However, most previous studies either ignored the influence of seepage or only considered the upward seepage in the prediction of sediment incipient motion. In this paper, a modified Shields number considering the two-dimensional seepage was derived. The analytical solution and numerical model were used to analyse the influence of wave-induced seepage on sediment incipient motion. The results indicated that two-dimensional seepage promoted the sediment incipient motion near wave troughs and restrained it near wave crests. The influence of seepage on sediment incipient motion would be underestimated if the horizontal seepage force was ignored. Meanwhile, it was found that the lower water depth and saturation, higher wave height, shear modulus and permeability in -direction would remarkably increase the seepage force and then enhance the mobility of seabed particles.
Impact of two-dimensional seepage flow on sediment incipient motion under waves
https://orcid.org/0000-0001-6275-2775
https://orcid.org/0000-0003-0199-0918
Highlights Effects of wave-induced seepage on the sediment incipient motion are obtained by analytical and numerical methods. New definition of Shields number with two-dimensional seepage. The influence of seepage flow on sediment incipient motion would be underestimated if the horizontal seepage force is ignored. The influence of seepage flow on sediment incipient motion would remarkably increase with the increased wave height, shear modulus, permeability.
Abstract A small seepage could cause significant changes to the hydrodynamic gradient and further enhance the sediment incipient motion and scour. However, most previous studies either ignored the influence of seepage or only considered the upward seepage in the prediction of sediment incipient motion. In this paper, a modified Shields number considering the two-dimensional seepage was derived. The analytical solution and numerical model were used to analyse the influence of wave-induced seepage on sediment incipient motion. The results indicated that two-dimensional seepage promoted the sediment incipient motion near wave troughs and restrained it near wave crests. The influence of seepage on sediment incipient motion would be underestimated if the horizontal seepage force was ignored. Meanwhile, it was found that the lower water depth and saturation, higher wave height, shear modulus and permeability in -direction would remarkably increase the seepage force and then enhance the mobility of seabed particles.
Impact of two-dimensional seepage flow on sediment incipient motion under waves
Zhai, Hualing (author) / Jeng, Dong-Sheng (author) / Guo, Zhen (author) / Liang, Zuodong (author)
Applied Ocean Research ; 108
2020-12-23
Article (Journal)
Electronic Resource
English
Discussion Incipient Sediment Motion With Upward Seepage
| British Library Online Contents | 2000
Effect of seepage flow on sediment incipient motion around a free spanning pipeline
| British Library Online Contents | 2019
Incipient Motion of Riverbank Sediments with Outflow Seepage
| British Library Online Contents | 2009