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- W4322005513 abstract "Quantitative assessments of wave-driven run-up and inundation scenarios have been of high interest to coastal residents, engineers, emergency managers, and scientists. Though it is possible to obtain general estimates of wave run-up based on empirical formulae, such approximations are often of limited applicability, especially in areas with complex shorelines and bathymetries. Due to the substantial increase in computing power, numerical models have emerged as reliable and cost-effective tools for nearshore wave assessment. Accurate computation of wave run-up requires the numerical models to account for phase-dependent processes that can pose challenges to the quality and computational complexity of the numerical solution. We present the strategic development of a new Boussinesq-type model with the objective of building a reliable tool for operational run-up forecasting systems.  The effort has led to a computer code where multiple fundamental features are optimized for both computational efficiency and accuracy to achieve fast and reliable solutions of nearshore waves. This requires the model to answer several challenges including wave breaking, numerical diffusion, moving boundaries, and computational complexity. To solve for these contradicting requirements, the model relies on a lean numerical structure that supports mass and momentum conservation across discontinuities and long-distance propagation of irregular waves. An eddy viscosity closure approach based on temporally and spatially varying turbulent kinetic energy alleviates the chronic limitation of depth-integrated dispersive solutions to wave breaking. In an attempt to achieve real-time run-up computations over large domains, the new model efficiently uses commodity graphics cards hardware, and targeted grid refinement through locally nested domains.Finally, the new model has been verified and validated with standard benchmark tests for problems involving commonly encountered nearshore wave processes that are crucial for accurate run-up computations. " @default.
- W4322005513 created "2023-02-26" @default.
- W4322005513 creator A5031725822 @default.
- W4322005513 creator A5057393074 @default.
- W4322005513 date "2023-05-15" @default.
- W4322005513 modified "2023-09-29" @default.
- W4322005513 title "Development of a phase-resolving nearshore wave model for run-up assessment" @default.
- W4322005513 doi "https://doi.org/10.5194/egusphere-egu23-7460" @default.
- W4322005513 hasPublicationYear "2023" @default.
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