ORCID Profile
0000-0001-6011-9407
Current Organisation
The University of Newcastle
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Publisher: Elsevier BV
Date: 2020
Publisher: Bentham Science Publishers Ltd.
Date: 17-11-2008
Publisher: Elsevier BV
Date: 09-2019
Publisher: Informa UK Limited
Date: 03-2009
Publisher: American Geophysical Union (AGU)
Date: 02-2016
DOI: 10.1002/2015JC011225
Publisher: ASMEDC
Date: 2010
Abstract: In this paper, a three-dimensional numerical model is developed to analyze the ocean wave-induced seabed response. The pipeline is assumed to be rigid and anchored within a trench. Quasi-static soil consolidation equations are solved with the aid of the proposed Finite Element (FE) model within COMSOL Multiphysics. The influence of wave obliquity on seabed responses, the pore pressure and soil stresses, are studied. A comprehensive tests of FE meshes is performed to determine appropriate meshes for numerical calculations. The present model is verified with the previous analytical solutions without a pipeline and two-dimensional experimental data with a pipeline. Numerical results suggest that the effect of wave obliquity on soil responses can be explained through the following two mechanisms: (i) geometry-based three-dimensional influences, and (ii) the formation of inversion nodes. However, the influences of wave obliquity on the wave-induced pore pressure are insignificant.
Publisher: Elsevier BV
Date: 10-2018
Publisher: Coastal Engineering Research Council
Date: 02-10-2014
Publisher: American Geophysical Union (AGU)
Date: 05-2014
DOI: 10.1002/2013JC009585
Publisher: University of Queensland Library
Date: 2013
Publisher: American Geophysical Union (AGU)
Date: 05-2022
DOI: 10.1029/2021JC018306
Abstract: Laboratory measurements of the interaction between high‐frequency (HF) wind‐waves and low frequency (LF) paddle waves are presented. The measurements were made in a wind‐wave flume with wind and paddle waves propagating in the same direction. The primary objective is to examine the physical mechanisms proposed to explain the suppression of wind‐waves due to presence of swell (here paddle waves). For this purpose, the precise time scale of the temporal transition from wind‐only to wind‐plus‐paddle conditions is examined. The results reveal that the majority of wind‐wave suppression occurs too quickly to have been caused by reduced wind‐input, instead indicating that enhanced HF wave dissipation is the primary suppression mechanism. The spatial variation in HF wave energy along the LF wave phase indicates that HF suppression mainly occurs on the LF wave crest, and high on the windward face, which are the locations that experience the highest wind velocities. This observation also suggests that the reduced wind‐input is not the primary suppression mechanism. Quantification of HF wave suppression versus a broad range of wind velocities, paddle wave conditions and fetch did not reveal any critical dependence of suppression on LF wave breaking or wind separation at LF wave crests. It is concluded that suppression occurs primarily due to enhanced dissipation of HF waves near LF wave crests. This mechanism is proposed to be coupled to the wind velocity, where an increased wind velocity near LF wave crests exceeds the level of forcing that HF waves of low C / u * can withstand without breaking.
No related grants have been discovered for Behnam Shabani.