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Although the different aspects of wave-mud interaction have been studied by many researchers, few studies have been conducted on the effect of solitary wave on the particle velocities formed in the layers of cohesive sediments. The main objective of the present study is to investigate different features of the mud mechanical responses to the solitary wave loadings. This paper describes a comprehensive study of solitary wave-mud interaction by means of sets of laboratory tests, in which time series of the velocity in the water and mud layers, as well as free-surface evolutions, were measured. Wave damping and several aspects of the mechanical response of the mud layer to solitary wave loadings, e.g. mud particle velocities, the ratio between positive and negative peak velocities, time shift between peak velocities in the mud and water layer and the mud movement period, were studied through nondimensional parameters. It was shown that, at higher values of the mud water content ratio, the time shifts between the peak velocities in the mud and water layers decrease, whereas the mud movement period and the ratio of the positive to the negative peaks increase. Similar trends were observed as the height of the solitary wave was increased. A viscous analytical two-layered model has been developed. Comparing to the measurements, the present model and the model of Liu and Chan (J Fluid Mech 579:467–480, 2007) presented a similar behaviour for simulating the mechanical response of mud under the action of a solitary wave and both models performed better than the model of Jiang and Zhao (J Waterw Port Coast Ocean Eng 115:345–362, 1989).
Mohsen Soltanpour; S. Hadi Shamsnia; Tomoya Shibayama; Ryota Nakamura. Experimental and analytical investigation of the response of a mud layer to solitary waves. Ocean Dynamics 2019, 70, 165 -186.
AMA StyleMohsen Soltanpour, S. Hadi Shamsnia, Tomoya Shibayama, Ryota Nakamura. Experimental and analytical investigation of the response of a mud layer to solitary waves. Ocean Dynamics. 2019; 70 (2):165-186.
Chicago/Turabian StyleMohsen Soltanpour; S. Hadi Shamsnia; Tomoya Shibayama; Ryota Nakamura. 2019. "Experimental and analytical investigation of the response of a mud layer to solitary waves." Ocean Dynamics 70, no. 2: 165-186.
The interactions between free surface waves and layers of cohesive sediments including wave height attenuation and mud movement are of great importance in coastal and marine engineering. In this study, the results from a new analytical model were compared with those from literature experimental works and analytical models in terms of wave height dissipation rate and mud velocity. It was found that the new model provided good agreements in the case of coexisting waves and currents, while the literature model of Ng (explained in Section 2 of the text) —assuming the mud layer as a highly viscous layer with high shear rates—matched well with the experimental data for high viscosity (mud viscosity, νm = O [0.01 m2/s]). In addition, it was found that the new model is able to successfully simulate particles velocity in the presence of co-current.
S. Hadi Shamsnia; Mohsen Soltanpour; Majid Bavandpour; Carlo Gualtieri. A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds. Geosciences 2019, 9, 212 .
AMA StyleS. Hadi Shamsnia, Mohsen Soltanpour, Majid Bavandpour, Carlo Gualtieri. A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds. Geosciences. 2019; 9 (5):212.
Chicago/Turabian StyleS. Hadi Shamsnia; Mohsen Soltanpour; Majid Bavandpour; Carlo Gualtieri. 2019. "A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds." Geosciences 9, no. 5: 212.
The upper fluid mud layer in muddy environments absorbs wave energy and, in turn, moves due to the wave action. In addition to these two major phenomena of wave-mud interaction, introduction of current in the wave field also changes the wave characteristics as well as the rates of mud mass transport. The present study offers an experimental investigation of wave-current-mud interaction to address the wave transformation and mud mass transport on a horizontal bed. A number of laboratory tests were conducted to measure the mud particle velocities as well as wave attenuation rates under following, opposing, and no current conditions. Both the wave energy dissipation and mud mass transport increase with the presence of opposing currents and decrease when following currents are introduced. A semi-analytical model was also presented and the numerical results are compared with the laboratory experiments, showing acceptable agreements.
Mohsen Soltanpour; S. Hadi Shamsnia; Tomoya Shibayama; Ryota Nakamura. A study on mud particle velocities and mass transport in wave-current-mud interaction. Applied Ocean Research 2018, 78, 267 -280.
AMA StyleMohsen Soltanpour, S. Hadi Shamsnia, Tomoya Shibayama, Ryota Nakamura. A study on mud particle velocities and mass transport in wave-current-mud interaction. Applied Ocean Research. 2018; 78 ():267-280.
Chicago/Turabian StyleMohsen Soltanpour; S. Hadi Shamsnia; Tomoya Shibayama; Ryota Nakamura. 2018. "A study on mud particle velocities and mass transport in wave-current-mud interaction." Applied Ocean Research 78, no. : 267-280.