Hindcasting nearshore wind waves using a FEM code for SWAN

Hsu, Tai‐Wen; Ou, Shan‐Hwei; Liau, Jian-Ming

doi:10.1016/j.coastaleng.2004.11.005

Cited by 79 publications

(40 citation statements)

References 15 publications

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“…Thus high-resolution away from the coast is generally useless, and even in hurricane conditions a resolution of a few kilometers is probably adequate. Unstructured grids are already used now in TOMAWAC (Benoit et al, 1996), MIKE21, and have been implemented as a non-standard version of the SWAN model (Hsu et al, 2005). The present version of SWAN is also able to apply curvilinear grids allowing for finer resolution near the coast.…”

Section: Geographic Resolutionmentioning

confidence: 99%

See 1 more Smart Citation

Wave modelling – The state of the art

Cavaleri¹,

Alves²,

Ardhuin³

et al. 2007

Progress in Oceanography

460

177

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This paper is the product of the wave modelling community and it tries to make a picture of the present situation in this branch of science, exploring the previous and the most recent results and looking ahead towards the solution of the problems we presently face. Both theory and applications are considered.The many faces of the subject imply separate discussions. This is reflected into the single sections, seven of them, each dealing with a specific topic, the whole providing a broad and solid overview of the present state of the art. After an introduction framing the problem and the approach we followed, we deal in sequence with the following subjects: (Section) 2, generation by wind; 3, non-linear interactions in deep water; 4, white-capping dissipation; 5, non-linear interactions in shallow water; 6, dissipation at the sea bottom; 7, wave propagation; 8, numerics. The two final sections, 9 and 10, summarize the present situation from a general point of view and try to look at the future developments. Keywords

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Section: Geographic Resolutionmentioning

confidence: 99%

“…These are not necessarily less diffusive but provide an efficient use of a variable grid resolution when details are needed close to the coast. Hsu et al (2005) proposed a Taylor-Galerkin FEM method to solve the spatial advection discretized to second order.…”

Section: Improved Numerical Schemes For Propagation On a Gridmentioning

confidence: 99%

Wave modelling – The state of the art

Cavaleri¹,

Alves²,

Ardhuin³

et al. 2007

Progress in Oceanography

460

177

View full text Add to dashboard Cite

show abstract

“…Both models have been successfully used in different studies, including forecast of typhoon (see e.g. Ou et al, 2002;Hsu et al, 2005) or hurricane waves in the US (Roland et al, 2005). Results of these studies showed the feasibility of using these two spectral wave models for the simulation of extreme waves, at least up to 15 m of height.…”

Section: The Wave Modellingmentioning

confidence: 99%

“…The multidimensional problem is split into parts (see e.g. Hsu et al, 2005or Roland, 2009) and the solution is advanced by solving each part successively. WWMII uses, for the advection part in geographical space, numerical schemes that work on unstructured meshes by applying residual distribution schemes (see e.g.…”

Section: The Wave Modellingmentioning

confidence: 99%

Spectral wave modelling of Typhoon Krosa

Babanin

Hsu

Roland

et al. 2011

Nat. Hazards Earth Syst. Sci.

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Abstract.This paper presents modelling the wave conditions in Typhoon Krosa prior to touching Taiwan in October 2007, with third-generation wave models of SWAN and WWM. The accuracy of the extreme wave measurement H max = 32 m with significant wave height H s ≈ 24 m at the depth of h = 38 m is discussed first. It is concluded that the measurement does not appear faulty and is physically realistic. The numerical results are then analysed in order to examine the models' capability to reproduce the observed conditions. It is found that neither SWAN nor WWMII are able to hindcast the extreme measurement. Series of sensitivity tests are conducted for different numerical and diffraction schemes, and source functions. It is shown that, in the circumstances, the model performance only improves in response to the bottom-limited breaking formulation.

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“…The Rankin Vortex Model (RVM) [49] was used to generate wind fields for the study area. Wave run-up and overtopping were also simulated based on the Reynolds averaged Navier-Stokes (RANS) equations with the particle level set method [50]. Different techniques, including Ensemble Empirical Mode Decomposition (EEMD) [31] and Fast Fourier Transformation (FFT), were applied to analyze the SLR of future scenarios.…”

Section: Integrated Coastal Watershed Modelsmentioning

confidence: 99%

A Study on Coastal Flooding and Risk Assessment under Climate Change in the Mid-Western Coast of Taiwan

Hsu

Shih

et al. 2017

Water

Self Cite

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This study integrated coastal watershed models and combined them with a risk assessment method to develop a methodology to investigate the impact resulting from coastal disasters under climate change. The mid-western coast of Taiwan suffering from land subsidence was selected as the demonstrative area for the vulnerability analysis based on the prediction of sea level rise (SLR), wave run-up, overtopping, and coastal flooding under the scenarios of the years from 2020 to 2039. Databases from tidal gauges and satellite images were used to analyze SLR using Ensemble Empirical Mode Decomposition (EEMD). Extreme wave condition and storm surge were estimated by numerical simulation using the Wind Wave Model (WWM) and the Princeton Ocean Model (POM). Coastal inundation was then simulated via the WASH123D watershed model. The risk map of study areas based on the analyses of vulnerability and disaster were established using the Analytic Hierarchy Process (AHP) technique. Predictions of sea level rise, the maximum wave condition, and storm surge under the scenarios of 2020 to 2039 are presented. The results indicate that the sea level at the mid-western coast of Taiwan will rise by an average of 5.8 cm, equivalent to a rising velocity of 2.8 mm/year. The analysis indicates that the Wuqi, Lukang, Mailiao, and Taixi townships are susceptive, low resistant and low resilient and reach the high-risk level. This assessment provides important information for creating an adaption policy for the mid-western coast of Taiwan.

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Hindcasting nearshore wind waves using a FEM code for SWAN

Cited by 79 publications

References 15 publications

Wave modelling – The state of the art

Wave modelling – The state of the art

Spectral wave modelling of Typhoon Krosa

A Study on Coastal Flooding and Risk Assessment under Climate Change in the Mid-Western Coast of Taiwan

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