Article
Engineering, Geological
Weihua Zhao, Xilin Xia, Xiaoli Su, Qiuhua Liang, Xiuwei Liu, Nengpan Ju
Summary: In this study, a high-performance depth-averaged model was used to explore the influence of complex 3D terrain on the movement process of landslides, with simulation results in good agreement with field observations. The study reveals the movement stages of landslides, predicting a maximum velocity of 35 m/s.
Article
Geochemistry & Geophysics
Yijie Zhang, Haixia Zhao, Wenjing Yan, Jinghuai Gao
Summary: This study developed a unified numerical scheme to handle seismic wave propagation in coupled acoustic, elastic, poroelastic, and anisotropic media. Through comparisons with analytic solutions and analysis of convergence rates, the accuracy and effectiveness of the proposed numerical scheme were demonstrated.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2021)
Article
Computer Science, Interdisciplinary Applications
Wei Zhang, Zhengzhou Wu, Chong Peng, Shuai Li, Youkou Dong, Weihai Yuan
Summary: A novel terrain contact algorithm is proposed and integrated into a GPU-accelerated 3D MPM to model large-scale landslides. The complex terrain is modeled by a fixed triangular surface mesh generated according to the digital elevation model (DEM), and the interaction between the sliding mass and the basal surface is modeled by a contact algorithm between the triangular surface mesh and the material points. The proposed method is accurate and efficient and can provide a useful tool for numerical study on landslides.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Thermodynamics
Pierre-Alexandre Masset, Florent Duchaine, Antoine Pestre, Laurent Selle
Summary: This study uses 3D Pore-Level Direct Numerical Simulations to investigate the combustion process in porous burners, comparing the results with a 1D volume-averaged model and discussing the discrepancies in burning rate, profiles, and reaction rates. It is found that preheating, wrinkling, and wall quenching are the main factors driving the global burning rate. Additionally, a new closure for reaction rates based on flamelet assumption is proposed, which eliminates the unwanted effect of hydrodynamic dispersion on burning rate.
COMBUSTION AND FLAME
(2023)
Article
Engineering, Civil
Naveed Ul Hassan Bhat, Gourabananda Pahar
Summary: The present study aims to develop a robust two-dimensional framework for simulating the submarine deformation of non-cohesive granular media and its impact on water bodies. The proposed framework has been validated against various test cases and shows potential for real-time extension to field-scale problems.
JOURNAL OF HYDROLOGY
(2022)
Article
Mathematics, Applied
Saray Busto, Michael Dumbser
Summary: In this paper, a novel thermodynamically compatible finite volume scheme is proposed for solving the equations of magnetohydrodynamics (MHD) in one and two space dimensions. The scheme directly discretizes the entropy inequality instead of the total energy conservation law, and achieves discrete total energy conservation through an appropriate linear combination. In multiple space dimensions, the scheme takes into account the divergence-free condition of the magnetic field via a new thermodynamically compatible generalized Lagrangian multiplier (GLM) divergence cleaning approach. The method's fundamental properties are mathematically proven, and it performs well on standard MHD benchmark problems.
SIAM JOURNAL ON NUMERICAL ANALYSIS
(2023)
Article
Computer Science, Interdisciplinary Applications
Andrea Pasqua, Alessandro Leonardi, Marina Pirulli
Summary: Continuum-based numerical models, including depth-averaged (DA) models and three-dimensional (3D) models, are widely used to simulate debris flows and predict key parameters for designing mitigation structures. This study aims to couple a DA model and a 3D model (DA-3D) to analyze flow-structure interaction. The transition from one model to the other requires the outputs of the DA model to become inputs of the 3D model. The successful coupling of the two models is validated through numerical simulations and experimental results.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Computer Science, Interdisciplinary Applications
Hiroaki Nishikawa
Summary: This paper clarifies the confusion over whether the QUICK scheme is a second-order or third-order scheme, demonstrating its third-order accuracy through truncation error analysis and numerical tests. It also discusses techniques for maintaining third-order accuracy for unsteady problems and addresses misconceptions about the scheme's accuracy. The paper serves as a reference for understanding the third-order accuracy of the QUICK scheme and lays the groundwork for discussing high-order unstructured-grid schemes in future work.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2021)
Article
Computer Science, Interdisciplinary Applications
Xiaoli Su, Xilin Xia, Qiuhua Liang, Jingming Hou
Summary: This paper develops a novel landslide model by coupling a DEM model with a DAM for landslide simulation. The new coupled model is able to reproduce the dynamic process of flow-like landslides.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Computer Science, Interdisciplinary Applications
Mohammad Nikooei, Clarence Edward Choi
Summary: This study proposes a new approach to model the effects of deposition in flow-type landslides. By simulating the flow-normal accelerations during the deposition process, a deposition model that considers the initial aspect ratio and slope angle of the debris is developed and implemented into engineering simulations. The new model improves predictions of flow distance and duration, and overcomes limitations of traditional models. This research is important for improving the delineation of flow-type landslides in mountainous regions.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Mathematics, Applied
Mostafa Bendahmane, Fatima Mroue, Mazen Saad
Summary: This paper investigates a positive nonlinear control volume finite element scheme for the monodomain model in electrocardiology, which successfully removes nonphysical oscillations in wavefront propagation and maintains conduction velocity close to physiological values.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2021)
Article
Environmental Sciences
Ni Zhang, Jiwen Zhang, Qingyi Mu, Zongji Yang
Summary: The study used a depth-integrated particle method and soil-water mixing model to analyze the failure processes of the Xinmo landslide, finding that erosion caused by rainwater accelerated the displacement rate of the landslide body. The rapid failure process lasted 105 seconds with a maximum velocity of 58.6 m/s.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Xiaohui Sun, Xudong Han, Jianping Chen, Yiding Bao, Wei Peng
Summary: The study analyzed the Qulong paleolandslide dam event in the upper Jinsha River, as well as the geological factors that led to this event. The relationship between earthquake magnitude and epicenter distance that triggered the landslide event was calculated using a new method. The results of the study show that the high-speed clastic flow from the Qulong paleolandslide had a significant impact on the surrounding terrain.
Article
Computer Science, Interdisciplinary Applications
Xiaoli Su, Qiuhua Liang, Xilin Xia
Summary: A new coupled model combining discrete element method and depth-averaged model was developed to simulate flow-like landslides. Experimental and simulation results confirm the model's ability to accurately reproduce the dynamic process of real-world flow-like landslides.
ENVIRONMENTAL MODELLING & SOFTWARE
(2022)
Article
Mathematics, Applied
Wenjia Xie, Zhengyu Tian, Ye Zhang, Hang Yu, Weijie Ren
Summary: The paper conducts continuous research to explore the mechanism of numerical shock instabilities of Godunov-type schemes for strong shocks. Through dissipation analysis and numerical experiments, it is clarified that inadequate entropy production inside the numerical shock structure may be the cause of instability. A general entropy-control technique is developed to improve the robustness of Godunov-type schemes at strong shocks without introducing additional numerical dissipation, resulting in good performance in accuracy and robustness for various test cases.
COMPUTERS & MATHEMATICS WITH APPLICATIONS
(2021)
Article
Geosciences, Multidisciplinary
Yun Xing, Qiuhua Liang, Gang Wang, Xiaodong Ming, Xilin Xia
Review
Environmental Sciences
David L. A. Flack, Christopher J. Skinner, Lee Hawkness-Smith, Greg O'Donnell, Robert J. Thompson, Joanne A. Waller, Albert S. Chen, Jessica Moloney, Chloe Largeron, Xilin Xia, Stephen Blenkinsop, Adrian J. Champion, Matthew T. Perks, Niall Quinn, Linda J. Speight
Article
Environmental Sciences
Yunsong Cui, Qiuhua Liang, Gang Wang, Jiaheng Zhao, Jinchun Hu, Yuehua Wang, Xilin Xia
Article
Water Resources
Qian Li, Qiuhua Liang, Xilin Xia
ADVANCES IN WATER RESOURCES
(2020)
Article
Environmental Sciences
Xiaodong Ming, Qiuhua Liang, Xilin Xia, Dingmin Li, Hayley J. Fowler
WATER RESOURCES RESEARCH
(2020)
Article
Environmental Sciences
Ling Jiang, Yang Hu, Xilin Xia, Qiuhua Liang, Andrea Soltoggio, Syed Rezwan Kabir
Editorial Material
Water Resources
Ilhan Ozgen-Xian, Xilin Xia, Qiuhua Liang, Reinhard Hinkelmann, Dongfang Liang, Jingming Hou
ADVANCES IN WATER RESOURCES
(2021)
Article
Computer Science, Interdisciplinary Applications
Jinghua Jiang, Qiuhua Liang, Xilin Xia, Jingming Hou
Summary: A novel model is proposed to simulate the dynamic process of NPS particulate pollutants in urban areas, from detachment to deposition. The model uses a particle-based approach to track the transport of pollutant particles through random-walk simulation, accurately identifying the pathways of pollutants in urban areas.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Engineering, Geological
Weihua Zhao, Xilin Xia, Xiaoli Su, Qiuhua Liang, Xiuwei Liu, Nengpan Ju
Summary: In this study, a high-performance depth-averaged model was used to explore the influence of complex 3D terrain on the movement process of landslides, with simulation results in good agreement with field observations. The study reveals the movement stages of landslides, predicting a maximum velocity of 35 m/s.
Article
Computer Science, Interdisciplinary Applications
Xiaoli Su, Xilin Xia, Qiuhua Liang, Jingming Hou
Summary: This paper develops a novel landslide model by coupling a DEM model with a DAM for landslide simulation. The new coupled model is able to reproduce the dynamic process of flow-like landslides.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Green & Sustainable Science & Technology
Jiaheng Zhao, Huili Chen, Qiuhua Liang, Xilin Xia, Jiren Xu, Trevor Hoey, Brian Barrett, Fabrice G. Renaud, Lee Bosher, Xin Zhou
Summary: As China's rapid economic development has led to significant changes in terrestrial, aquatic, and marine environments, a new framework for flood risk assessment under different development scenarios was introduced in this paper. Model simulations were conducted to investigate flood risk under various land use change scenarios, with potential guidance provided to inform future development strategies in the Luanhe River Basin.
SUSTAINABILITY SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Xin Zhou, Mustafa Moinuddin, Fabrice Renaud, Brian Barrett, Jiren Xu, Qiuhua Liang, Jiaheng Zhao, Xilin Xia, Lee Bosher, Suiliang Huang, Trevor Hoey
Summary: The paper presents a methodology for analyzing SDG interlinkages at the basin scale and its application in a case study in China's Luanhe River Basin, which can support integrated water resource management.
SUSTAINABILITY SCIENCE
(2022)
Article
Engineering, Civil
Xiaodong Ming, Qiuhua Liang, Richard Dawson, Xilin Xia, Jingming Hou
Summary: This study focuses on addressing the challenges in compound flood risk assessment and proposes an integrated assessment framework to quantify compound flood risk by analyzing hazard, vulnerability, and exposure. The framework is applied to the Greater London and Thames estuary to demonstrate its capability in analyzing hazard interactions and dependencies, and generating fully quantitative risk assessment results.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Geological
Xilin Xia, Kristine Thorkildsen Jarsve, Tom Dijkstra, Qiuhua Liang, Xingmin Meng, Guan Chen
Summary: Debris flow is a common geohazard in mountainous regions, and effectively simulating runoff-generated debris flows is crucial. In this study, a depth-averaged debris flow model with a novel method of calculating the erosion-deposition rate is developed. The model has been validated and shows potential for wider applications such as risk assessment and impact-based early warning.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Civil
Syed Kabir, Sandhya Patidar, Xilin Xia, Qiuhua Liang, Jeffrey Neal, Gareth Pender
JOURNAL OF HYDROLOGY
(2020)