Abstract
Coastal flooding caused by riverine flow or storm surges, or the combined river flow and storm surges induced by tropical cyclones produce significant causalities and huge loss of properties in low-lying areas. The successive or co-occurrence of riverine flow and storm surges exacerbates the flood risk more than due to individual occurrences. The efforts to reduce the aftereffect of coastal flooding motivated many studies to simulate compound floods using the combinations of hydrodynamic and hydraulic models. These models are combined in loosely coupled or tightly coupled ways. Due to its faster computations, the existing studies often employed the loosely coupled model developed using the 2D storm surge model and 2D flood models or simple 1D–2D research codes. So far, the suitability of the loosely coupled approach to analyse the compound flood effects from river flow and storm surge has not been dealt with in detail. Further, the models developed based on the tightly coupled approach are very few, and their application has proven that these models suffer from model instability and computational burden. Therefore, an unstructured grid-based river-bay model is developed in this study for the stable and efficient simulation of coastal floods.
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This research is funded by the Department of Science and Technology, India, under the SPLCIE climate change programme through the Grant No.DST/CCP/CoE/141/2018c.
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Sridharan, B., Nath Kuiry, S. (2023). River-Bay Model for Simulating the Compound Effect of River Flow and Storm Surges. In: Timbadiya, P.V., Deo, M.C., Singh, V.P. (eds) Coastal, Harbour and Ocean Engineering . HYDRO 2021. Lecture Notes in Civil Engineering, vol 321. Springer, Singapore. https://doi.org/10.1007/978-981-19-9913-0_10
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