A5088700052- Traffic control and management
- Transportation Planning and Optimization
- Hydraulic flow and structures
- Traffic Prediction and Management Techniques
- Evacuation and Crowd Dynamics
- Ocean Waves and Remote Sensing
- Coastal and Marine Dynamics
- Arctic and Antarctic ice dynamics
- Computational Fluid Dynamics and Aerodynamics
- Hydrology and Sediment Transport Processes
- Dam Engineering and Safety
- Flood Risk Assessment and Management
- Fluid Dynamics and Turbulent Flows
- Geophysics and Gravity Measurements
- Tropical and Extratropical Cyclones Research
- Water Systems and Optimization
- Fluid Dynamics Simulations and Interactions
- Advanced Numerical Methods in Computational Mathematics
- Metallurgy and Material Forming
- Aerodynamics and Fluid Dynamics Research
- Earthquake and Tsunami Effects
- Engineering Structural Analysis Methods
- Irrigation Practices and Water Management
- Urban Stormwater Management Solutions
- Differential Equations and Numerical Methods
Northwest A&F University
2022-2024
Shanghai University
2004-2024
Hunan University
2023
Dalian University of Technology
2018-2022
An extended car following model is proposed by incorporating an intelligent transportation system in traffic. The stability condition of this obtained using the linear theory. results show that anticipating behavior more vehicles ahead leads to stabilization traffic systems. modified Korteweg-de Vries equation (the mKdV equation, for short) near critical point derived applying reductive perturbation method. jam could be thus described kink-antikink soliton solution equation. From simulation...
Two lattice traffic models are proposed by incorporating a cooperative driving system. The versions of the hydrodynamic model flow described differential-difference equation and difference-difference equation, respectively. stability conditions for two obtained using linear theory. results show that considering more than one site ahead in vehicle motion leads to stabilization modified Korteweg-de Vries (the mKdV short) near critical point is derived reductive perturbation method jam which...
In this paper, a centrifugal force model is developed for pedestrian dynamics. The effects of both the headway and relative velocity among pedestrians are taken into account, which can be expressed by ``centrifugal force'' term in dynamic equation. jamming probability due to arching at exits crowd flows provided. A quantitative analysis flowing out hall shows that average leaving time $T$ function exit width $W$ negative power. related simulation indicates proposed able reproduce...
Critical flow is defined under steady gradually varied conditions, yet its hydraulic characteristics remain unclear for unsteady rapidly in various overflow structures. This work investigates how the affects of critical seven types weirs using shallow water equations (SWE), non-hydrostatic Serre-Green-Naghdi (SGNE), and Reynolds-averaged Navier–Stokes (RANSE). Key findings include: (i) For flows with significant streamline curvature, point not generally located at weir crest as predicted by...
This paper focuses on the temporal and spatial evolutions of critical flow under unsteady rapidly varied conditions, which is defined based different viewpoints steady gradually conditions in classical fluid mechanics theory. So far, fundamental theory largely unknown for conditions. Taking a Gauss-type weir as an example, this work investigates comprehensively comparatively influences unsteadiness, non-hydrostatic pressure, non-uniform velocity at crest using three models: (i) vertically...
Periodic shock waves of roll may cause the flow to jump over canal bank, increase soil erosion, and enhance destructive power debris flow. This paper focuses on spatiotemporal changes in waveform, velocity, discharge, shear stress, Froude number during development process waves, taking non-uniform as initial condition. work studied numerically influence mechanism different variables based steep slope shallow water equations. The wave is unstable when disturbance amplitude too large. By...
Abstract This paper investigates the cascading dam-break flood propagation on downstream sloping channel and reservoir using shallow water equations (SWEs) Reynolds-average Navier-Stokes (RANS). The calculated surface profiles, stage hydrographs maximum run-up heights for 24 sets of initial conditions are elaborately compared with experimental measurements, which show SWEs reproduce wave oscillation evolution height inaccurately. by all smaller than those RANS measured results, errors within...
Based on the Nagel–Schreckenberg (NaSch) model of traffic flow, a new cellular automaton (CA) is proposed to simulate microscopic flow. The probability p variable which contains randomly selected term for each individual driver and density-dependent same all drivers. When rational obtained, larger value maximum flow close observed data can be reached compared with that obtained from NaSch model. fundamental diagram by simulation shows ability this modified CA capture essential features e.g.,...
The rapid expansion of construction land has been a common phenomenon worldwide, which resulted in the loss high-quality arable and severe degradation. Here, statistical analysis, together with field investigation, was carried out China to address challenges. This study gathered data on reduction amount quality caused by activities collected relevant policies control deterioration those activities. increasing farmland open space are occupied use. annual growth from 2001 2017 43.64 × 104 hm2,...