Explanipedia

Peripheral Water Pressure Characteristics of Piers under Oblique Flow Conditions Open

Y. Li, Yangyang Li, Qingwei Ma, Panyu Zhou, C. Z. Zhang , et al. · 2025

To investigate the impact characteristics of oblique flow on dolphin-type pier structures in mountainous river confluence hubs, the Madao Hub of the Pinglu Canal—a pivotal component of China's Western Land-Sea New Corridor initiative—was e…

Multi-Scale Feature Analysis Method for Soil Heavy Metal Based on Two-Dimensional Empirical Mode Decomposition: An Example of Arsenic Open

Mei Yang, Ge Lin, Chengsong Yao, Jinjie Zhu, Wenqiang Wang , et al. · 2025

The spatial distribution of soil heavy metals was influenced by both natural and anthropogenic factors, and the multi-scale characteristics of heavy metals played a key role in analyzing their influencing factors. Taking arsenic (As) of an…

Hybrid ISPH_GNN method for simulating violent wave-structure interactions using wave-only data for training Open

Ningbo Zhang, Shiqiang Yan, Qingwei Ma · 2025

It has been well-known that the incompressible Smoothed Particle Hydrodynamics (ISPH) is a powerful method for simulating violent wave-structure interactions (WSIs) concerned in marine engineering. However it is time consuming, primarily d…

Hydrodynamic Response of Mocean Wave Energy Converter in Extreme Waves Open

John Ashlin Samuel, Vengatesan Venugopal, Chris Retzler, Qingwei Ma · 2025

The design of moored floating wave energy converters (WECs) must take into account extreme responses and mooring line loads in order to ensure their survival and continued wave power generation in the ocean environment. This study focuses …

Investigation of the Cooling Characteristics of a Novel Parallel-Flow Double-Wall Structure Under Low Pressure Ratio Supply Conditions Open

Shuiting Ding, Qiyu Yuan, Peng Liu, Zhen Gao, Qingwei Ma , et al. · 2025

Numerical simulation of wave-floater interactions using ISPH_GNN trained on data for wave-only cases Open

Ningbo Zhang, Shiqiang Yan, Qingwei Ma, Qian Li · 2024

As a mesh-free approach, the incompressible Smoothed Particle Hydrodynamics (ISPH) method has been often used for simulating wave-structure interaction problems. In the conventional ISPH method, the pressure-projection phase of solving the…

Exploring unseen 3D scenarios of physics variables using machine learning-based synthetic data: An application to wave energy converters Open

César Quilodrán-Casas, Qian Li, Ningbo Zhang, Sibo Cheng, Shiqiang Yan , et al. · 2024

A hybrid method combining ISPH with graph neural network for simulating free-surface flows Open

Ningbo Zhang, Shiqiang Yan, Qingwei Ma, Qian Li · 2024

The close association of micronutrients with COVID-19 Open

Aimin Zhang, Yue Yin, Jiashu Tian, Xialin Wang, Zhihong Yue , et al. · 2024

A consistent second order ISPH for free surface flow Open

Ningbo Zhang, Shiqiang Yan, Qingwei Ma, Abbas Khayyer, Xiaohu Guo , et al. · 2024

The Incompressible Smoothed Particle Hydrodynamics (ISPH) is now a popular numerical method for modelling free surface flows, in particular the breaking waves and violent wave-structures interaction. The ISPH requires the projection approa…

A hybrid method for modelling wake flow of a wind turbine Open

Yuming Yuan, Qingwei Ma, Shiqiang Yan, Xing Zheng, Kangping Liao , et al. · 2023

A fast and accurate prediction of the wake of an upwind turbine is very important to quantify the performance of downwind turbines in offshore wind farms, which become larger and larger. The wake flow and dynamics may be quite accurately s…

Aeroelastic Instability Analysis of Floating Offshore and Onshore Wind Turbines Under Extreme Conditions Open

Jiyuan Men, Qingwei Ma, Gang Ma, Xing Zheng, Hanbin Sun · 2023

Modeling Crossing Random Seas by Fully Non-Linear Numerical Simulations Open

Jinghua Wang, Qingwei Ma, Shiqiang Yan, Bingchen Liang · 2021

Bimodal spectrum wave conditions, known as crossing seas, can produce extreme waves which are hostile to humans during oceanic activities. This study reports some new findings of the probability of extreme waves in deep crossing random sea…

Air cushion barge platform for offshore wind turbine and its stability at a large range of angle Open

Hongbin Hao, Zhiqun Guo, Qingwei Ma, Guochun Xu · 2020

Modelling of focused wave interaction with wave energy converter models using qaleFOAM Open

Junxian Wang, Shiqiang Yan, Qingwei Ma, Jinghua Wang, Zhihua Xie , et al. · 2020

This paper presents a numerical investigation on the interaction between focused waves and wave energy converter (WEC) models using a hybrid solver, qaleFOAM, which couples a two-phase incompressible Navier–Stokes (NS) solver OpenFOAM/Inte…

A Study on Stable Regularized Moving Least-Squares Interpolation and Coupled with SPH Method Open

Hua Jiang, Yunsai Chen, Xing Zheng, Shanqin Jin, Qingwei Ma · 2020

The smoothed particle hydrodynamics (SPH) method has been popularly applied in various fields, including astrodynamics, thermodynamics, aerodynamics, and hydrodynamics. Generally, a high-precision interpolation is required to calculate the…

Aeroelastic Performance Analysis of Wind Turbine in the Wake with a New Elastic Actuator Line Model Open

Ziying Yu, Zhenhong Hu, Xing Zheng, Qingwei Ma, Hongbin Hao · 2020

The scale of a wind turbine is getting larger with the development of wind energy recently. Therefore, the effect of the wind turbine blades deformation on its performances and lifespan has become obvious. In order to solve this research r…

Investigation of interaction between extreme waves and a moored FPSO using FNPT and CFD solvers Open

Zheng Zheng Hu, Shiqiang Yan, Deborah Greaves, Tri Mai, Alison Raby , et al. · 2020

A Blind Comparative Study of Focused Wave Interactions with Floating Structures (CCP-WSI Blind Test Series 3) Open

Edward Ransley, Shiqiang Yan, Scott Brown, Martyn Hann, David I. Graham , et al. · 2020

Results from the CCP-WSI Blind Test Series 3 are presented. Participants, with numerical methods, ranging from lowfidelity linear models to high-fidelity Navier–Stokes (NS) solvers, simulate the interaction between focused waves and floati…

Comparative Study on Violent Sloshing with Water Jet Flows by Using the ISPH Method Open

Hua Jiang, Yi You, Zhenhong Hu, Xing Zheng, Qingwei Ma · 2019

The smoothed particle hydrodynamics (SPH) method has been playing a more and more important role in violent flow simulations since it is easy to deal with the large deformation and breaking flows from its Lagrangian particle characteristic…

An Experimental Study of Focusing Wave Generation with Improved Wave Amplitude Spectra Open

Guochun Xu, Hongbin Hao, Qingwei Ma, Qinqin Gui · 2019

We experimentally investigate the generating results of space-time focusing waves based on two new wave spectra, i.e., the quasi constant wave amplitude spectrum (QCWA) and the quasi constant wave steepness spectrum (QCWS), in which amplit…

A numerical study on ice failure process and ice-ship interactions by Smoothed Particle Hydrodynamics Open

Ningbo Zhang, Xing Zheng, Qingwei Ma, Zhenhong Hu · 2019

A zonal hybrid approach coupling FNPT with OpenFOAM for modelling wave-structure interactions with action of current Open

Qian Li, Jinghua Wang, Shiqiang Yan, Jiaye Gong, Qingwei Ma · 2018

This paper presents a hybrid numerical approach, which combines a two-phase Navier- Stokes model (NS) and the fully nonlinear potential theory (FNPT), for modelling wave-structure interaction. The former governs the computational domain ne…

Effects of the terms associated with ϕzz in free surface condition on the attitudes and resistance of different ships Open

Yunbo Li, Jiaye Gong, Qingwei Ma, Shiqiang Yan · 2018

A Comparative Study on Violent Sloshing with Complex Baffles Using the ISPH Method Open

Xing Zheng, Yi You, Qingwei Ma, Abbas Khayyer, Songdong Shao · 2018

The Smoothed Particle Hydrodynamics (SPH) method has become one of the most promising methods for violent wave impact simulations. In this paper, the incompressible SPH (ISPH) method will be used to simulate liquid sloshing in a 2D tank wi…

A New Interface Identification Technique Based on Absolute Density Gradient for Violent Flows Open

Yan Zhou, Qingwei Ma · 2018

An identification technique for sharp interface and penetrated isolated particles is developed for simulating two-dimensional, incompressible and immiscible two-phase flows using meshless particle methods in this paper. This technique is b…

Transmission of Water Waves under Multiple Vertical Thin Plates Open

Yifei Yu, Zhiqun Guo, Qingwei Ma · 2018

The transmission of water waves under vertical thin plates, e.g., offshore floating breakwaters, oscillating water column wave energy converters, and so on, is a crucial feature that dominates the hydrodynamic performance of marine devices…

Study on Actuator Line Modeling of Two NREL 5-MW Wind Turbine Wakes Open

Ziying Yu, Xing Zheng, Qingwei Ma · 2018

The wind turbine wakes impact the efficiency and lifespan of the wind farm. Therefore, to improve the wind plant performance, research on wind plant control is essential. The actuator line model (ALM) is proposed to simulate the wind turbi…

Multi-Domain 2.5D Method for Multiple Water Level Hydrodynamics Open

Zhiqun Guo, Qingwei Ma, Hongde Qin · 2018

The mean water surface (interface) under the air cushion of a surface effect ship (SES) or an air cushion supported platform (ACSP) is generally lower than the outside water surface due to the overpressure of the air cushion. To precisely …

Study on SPH Viscosity Term Formulations Open

Xing Zheng, Qingwei Ma, Songdong Shao · 2018

For viscosity-dominated flows, the viscous effect plays a much more important role. Since the viscosity term in SPH-governing (Smoothed Particle Hydrodynamics) equations involves the discretization of a second-order derivative, its treatme…

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