Spectral analysis of irregular waves in wave–mud and wave–current–mud interactions

Samsami, Farzin; Soltanpour, Mohsen; Shibayama, Tomoya

doi:10.1007/s10236-015-0864-4

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…The parameters applied in the comparisons, are provided in Table 3, where ρ u represents the upper layer density in the experiments of Gade (1958), in which kerosene was used in the upper layer, instead of clear water. For the comparisons, the mud viscosities were calculated from the rheological tests of Samsami et al [1] as ν m =0.07, 0.05, and 0.03 (N/m 2 ) corresponding to the water content ratios of W = 130, 140, and 160%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The variation of mud particles velocity against the dimensionless mud thickness is plotted in Figure 10. The results from the Ng model are one order of magnitude smaller than those from the other models for large values of mud thickness because Ng [5] assumed that the mud thickness is of the same order as the mud boundary layer thickness (i.e., d n = O [1]). Thus, the results are not applicable to the large values of d n .…”

Section: Velocity Amplitudementioning

confidence: 85%

“…The mud particles velocity and the resultant mud transport greatly affect coastal environment and geomorphology by transporting chemical species. In addition, the mud transport is of great importance in designing the harbors and dredging systems [1]. By transferring the energy from the free surface water waves to the lower depths and consequently to the muddy bottom, the mud layer starts moving (i.e., mud transport) and the wave energy damps due to the wave induced shear effects (i.e., wave height attenuation).…”

Section: Introductionmentioning

confidence: 99%

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A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

et al. 2019

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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.

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Section: Resultsmentioning

confidence: 99%

Section: Velocity Amplitudementioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

et al. 2019

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“…Despite numerous research efforts on wave-mud interactions ( [9,16,[29][30][31][32][33][34] in addition to the above-mentioned studies), very few analytical and numerical studies have been carried to formulate the effects of current on the wave-mud interactions. Nakano [35] employed an extended multi-layered fluid system to model wave-current-mud interaction.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Study on Wave-Current-Mud Interaction

Shamsnia

Dutykh

2020

Water

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This study aims at providing analytical investigations to the first and second-order on the wave–current–mud interaction problem by applying a perturbation method. Direct formulations of the wave–current–mud interaction could not be found in the literature. Explicit formulations for the particle velocity, dissipation rates, and phase shift in the first order and the mass transport in the second-order have been obtained. The findings of the current study confirmed that by an increase in the current velocity (e.g., moving from negative to positive values of current velocity), the dissipation rates and mud (instantaneous and mean) velocity decrease. The proposed assumption of a thin mud layer (boundary layer assumption) matches with the laboratory data in the mud viscosity of the orders of (0.01 N/m2) in both wave dissipation and mud mass transport leading to small ranges of discrepancies. The results from the newly proposed model were compared with the measurements and the results of an existing model in the literature. The proposed model showed better agreements in simulating the mud (instantaneous and mean) velocity compared to the existing one.

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