Irregular Wave Attenuation and Mud Mass Transport

Soltanpour, Mohsen; Shibayama, Tomoya; Masuya, Yugo

doi:10.1142/s0578563407001551

Cited by 12 publications

(9 citation statements)

References 15 publications

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“…A wave-mud interaction model including the V water layer and fluid mud non-Newtonian sublayers are used to compute wave attenuation rate (Tsuruya et al 1987;Soltanpour et al 2007). The bed is assumed to be horizontal and infinite.…”

Section: Wave-fluid Mud Interaction Modelmentioning

confidence: 99%

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A comparative study on the rheology and wave dissipation of kaolinite and natural Hendijan Coast mud, the Persian Gulf

Soltanpour

Samsami

2011

Ocean Dynamics

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The objective of this paper is to investigate the rheological behavior of kaolinite and Hendijan mud, located at the northwest part of the Persian Gulf, and the dissipative role of this muddy bed on surface water waves. A series of laboratory rheological tests was conducted to investigate the rheological response of mud to rotary and cyclic shear rates. While a viscoplastic Bingham model can successfully be applied for continuous controlled shearstress tests, the rheology of fluid mud displays complex viscoelastic behavior in time-periodic motion. The comparisons of the behavior of natural Hendijan mud with commercial kaolinite show rheological similarities. A large number of laboratory wave-flume experiments were carried out with a focus on the dissipative role of the fluid mud. Assuming four rheological models of viscous, Kelvin-Voigt viscoelastic, Bingham viscoplastic, and viscoelastic-plastic for fluid mud layer, a numerical multi-layered model was applied to analyze the effects of different parameters of surface wave and muddy bed on wave attenuation. The predicted results based on different rheological models generally agree with the obtained wave-flume data implying that the adopted rheological model does not play an important role in the accuracy of prediction.

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Section: Wave-fluid Mud Interaction Modelmentioning

confidence: 99%

“…However, the differences of outputs of the wave attenuation rates reveal the differences in the input mud rheology if all the other input parameters of numerical model do not vary. The details of the numerical model have been provided in Soltanpour et al (2007).…”

Section: Wave-fluid Mud Interaction Modelmentioning

confidence: 99%

A comparative study on the rheology and wave dissipation of kaolinite and natural Hendijan Coast mud, the Persian Gulf

Soltanpour

Samsami

2011

Ocean Dynamics

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“…In order to simulate the energy dissipation on mud layer, the deformed wave spectra due to current at the beginning of mud section is discretized to a number of harmonic regular waves (Zhang and Zhao, 1999). The attenuated wave spectra is then calculated by the numerical model of Soltanpour et al (2007). Table 3 shows the representative wave parameters of the measured and simulated wave spectra due to current action at gauge No.…”

Section: Resultsmentioning

confidence: 99%

“…Employing Fourier theory, the spectral wave is then presented as superposition of many simple, regular harmonic wave components having their own amplitudes and periods. The numerical model of Soltanpour et al (2007) is used for the calculation of attenuation of both regular waves and harmonic components of spectral waves.…”

Section: Simulation Of Wave-current Interaction On Fluid Mudmentioning

confidence: 99%

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Study of Irregular Wave-Current-Mud Interaction

Soltanpour

Samsami

Shibayama

et al. 2014

Int. Conf. Coastal. Eng.

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The dissipation of regular and irregular waves on a muddy bed with the existence of following and opposing currents are investigated through a series of wave flume laboratory experiments. The commercial kaolinite is used as fluid mud layer. The laboratory results show the increase of both regular and irregular wave heights due to opposing currents. On the other hand, the following currents result to the decrease of the wave heights. In the numerical treatment, the deformation of wave due to current was first calculated based on the conservation equation of wave action and then the attenuation of this deformed wave due to the muddy bed is simulated by a multi-layered wave-mud interaction model. Acceptable agreements were observed between the numerical results and laboratory data.

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Development of bedforms due to waves blocked by a counter current

Chatterjee

Ghosh

Mazumder

et al. 2019

Earth Surf Processes Landf

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Experiments are conducted in a laboratory flume on the propagation of a surface wave against unidirectional flow with a sediment bed. This article presents the spatial variation of bedforms induced by the wave‐blocking phenomenon by a suitably tuned uniform fluid flow and a counter‐propagating wave. The occurrence of wave‐blocking is confirmed by finding a critical wave frequency in a particular flow discharge in which the waves are effectively blocked and is established using the linear dispersion relation. The purpose of this work is to identify wave‐blocking and its influence on the development of bedforms over the sediment bed. Interestingly bedform signatures are observed at a transition of bedforms in three zones, with asymmetric ripples having a steeper slope downstream face induced by the incoming current, followed by flat sand bars beneath the wave‐blocking zone and more symmetric ripples below the wave‐dominated region at the downstream. This phenomenon suggests that the sediment bed is segmented into three different regions of bed geometry along the flow. The deviations of mean flows, Reynolds stresses, turbulent kinetic energy, and power spectral density due to the wave‐blocking phenomenon are presented along the non‐uniform flow over sediment bed. The bottom shear stress, bed roughness and stochastic nature of the bedform features are also discussed. The results are of relevance to engineers and geoscientists concerned with contemporary process as well as those interested in the interpretation of palaeoenvironmental conditions from fossil bedforms. © 2019 John Wiley & Sons, Ltd.

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Irregular Wave Attenuation and Mud Mass Transport

Cited by 12 publications

References 15 publications

A comparative study on the rheology and wave dissipation of kaolinite and natural Hendijan Coast mud, the Persian Gulf

A comparative study on the rheology and wave dissipation of kaolinite and natural Hendijan Coast mud, the Persian Gulf

Study of Irregular Wave-Current-Mud Interaction

Development of bedforms due to waves blocked by a counter current

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