ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Coastal Ocean Processes
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1570015
This article is part of the Research TopicAdvances in modeling of coastal and estuarine waters: assessing stressors, analyzing extreme events, and addressing current and future risksView all 3 articles
Advanced Pressure Stabilization Techniques in a Water-Sediment WCSPH Model for Simulating Water Disasters in Coastal Cities
Provisionally accepted
- 1University of Macau, Taipa, China
- 2PowerChina, Beijing, China
- 3Tsinghua University, Beijing, Beijing, China
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Extreme water disasters in coastal cities have gained increasing attention, particularly in the context of climate change and rising sea levels, such as dike-break floods and tsunamis. These types of water disasters inherently involve highly dynamic flows with intensely fluctuating surfaces, often significantly influenced by sediment movement. Accurately predicting these flows remains challenging. However, Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) models offer inherent advantages in capturing their dynamic behavior, provided that pressure is calculated with sufficient accuracy. In this study, two advanced pressure stabilization techniques (modified Shepard filtering method and two-phase δ-SPH method), tailored to accommodate water-sediment systems, are proposed for the first time. The effectiveness and computational efficiency of these proposed methods are quantitatively discussed. A water-sediment WCSPH mathematical model, incorporating these advanced methods, is then applied to simulate dike-break floods and associated sediment movement, as well as the generation and propagation of tsunamis induced by submarine landslides. The results demonstrate that the proposed pressure stabilization methods enhance the accuracy of the model in pressure field calculations, leading to more reliable predictions of extreme water-related disasters, such as dike-break flood propagation and tsunamis induced by submarine landslides. These methods can also be incorporated into other water-sediment WCSPH models to further enhance their accuracy. Additionally, the present model, integrated with these advanced methods, provides dynamic insights into these water disasters, helping to improve disaster prevention efforts in coastal cities.
Keywords: coastal disasters, flooding, Tsunamis induced by submarine landslides, Weakly-Compressible Smoothed Particle Hydrodynamics (WCSPH), Pressure stabilization methods
Received: 02 Feb 2025; Accepted: 24 Jun 2025.
Copyright: © 2025 Guan, Jiang, Li and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Lei Jiang, PowerChina, Beijing, 100048, China
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