A5068548095- Landslides and related hazards
- Granular flow and fluidized beds
- Fluid Dynamics and Turbulent Flows
- Oceanographic and Atmospheric Processes
- Nanofluid Flow and Heat Transfer
- Rheology and Fluid Dynamics Studies
- Hydrology and Sediment Transport Processes
- Fluid Dynamics and Vibration Analysis
- Cryospheric studies and observations
- Food Quality and Safety Studies
- Music and Audio Processing
- Speech and Audio Processing
- Fluid Dynamics Simulations and Interactions
- Soil and Unsaturated Flow
- Lattice Boltzmann Simulation Studies
- Advanced Thermodynamics and Statistical Mechanics
- Meteorological Phenomena and Simulations
- Geological formations and processes
- Particle Dynamics in Fluid Flows
- Speech Recognition and Synthesis
- Computational Fluid Dynamics and Aerodynamics
- Methane Hydrates and Related Phenomena
- Ocean Waves and Remote Sensing
- Elasticity and Material Modeling
- Thermoelastic and Magnetoelastic Phenomena
Zhejiang University
2022-2025
Zhengzhou University
2025
Technical University of Darmstadt
2015-2024
Changsha University of Science and Technology
2023-2024
Hunan Research Academy of Environmental Sciences
2024
Anhui University of Finance and Economics
2024
University of Science and Technology of China
2024
Dalian University of Technology
2023-2024
Kunming University of Science and Technology
2024
Northeast Forestry University
2022-2024
Abstract. This paper is an extension of the single-phase cohesionless dry granular avalanche model over curved and twisted channels proposed by Pudasaini Hutter (2003). It a generalisation Savage (1989, 1991) equations based on simple channel topography to two-phase fluid-solid mixture debris material. Important terms emerging from correct treatment kinematic dynamic boundary condition, variable basal are systematically taken into account. For vanishing fluid contribution torsion-free our...
In this paper, we present a unified numerical framework for granular modelling. A constitutive model capable of describing both quasi-static and dynamic behaviours material is developed. Two types particle interactions controlling the mechanical responses, frictional contact collision, are considered by hypoplastic Bagnold-type rheology relation, respectively. The makes no use concepts like yield stress or flow initiation criterion. smooth transition between solid-like fluid-like behaviour...
The effect of a third-order fluid on the peristaltic transport is analysed in circular cylindrical tube, such as some organs living body. flow an incompressible which axisymmetric travelling sinusoidal wave imposed, considered. wavelength waves assumed to be large compared tube average radius, whereas amplitude need not small radius. Both analytic (perturbation) and numerical solutions are given. For perturbation solution, systematic approach based asymptotic expansion solution terms Deborah...
We performed laboratory experiments of dry granular chute flows impinging an obstructing wall. The consists a 10cm wide rectangular channel, inclined by 50° relative to the horizontal, which, 2m downslope abruptly changes into horizontal channel same width. 15l quartz chips are released through gate with width as and gap 6cm height, respectively. Experiments conducted for two positions wall, (i) below exit perpendicular chute, (ii) 0.63m runout then vertically oriented. Granular material is...
The effects of dilatancy on the collapse dynamics granular materials in air or a liquid are studied experimentally and numerically. Experiments show that has critical effect columns presence an ambient fluid. Two regimes collapse, one being quick other slow, observed from experiments underlying reasons analyzed. A two-fluid smoothed particle hydrodynamics model, based granular-fluid mixture theory state theory, is employed to investigate complex interactions between solid particles water. It...
Polyimide (PI) faces new challenges in meeting the requirements of low coefficient thermal expansion (CTE), dielectric content/loss, and high stability to be utilized effectively as a substrate for flexible electronic materials. At present research, CTE PI films can reduced around 5 ppm/K, with Tg > 420 °C. However, it is difficult balance at same time, reducing performance even more difficult. This study focused on synthesizing four types (using BPDA dianhydride) by employing biphenyl...
The effects of an Oldroyd‐B fluid on the peristaltic mechanism are examined under long wavelength assumption. Analytical expressions for stream function, axial velocity, and pressure rise per obtained up to second order in dimensionless wave number. various parameters interest flow shown discussed.
This paper is devoted to the study of two‐dimensional flow a Johnson‐Segalman fluid in planar channel having walls that are transversely displaced by an infinite, harmonic travelling wave large wavelength. Both analytical and numerical solutions presented. The analysis for solution carried out small Weissenberg numbers. (A number ratio relaxation time characteristic associated with flow.) Analytical have been obtained stream function from which relations velocity longitudinal pressure...
Abstract The Savage‐Hutter (SH) equations of granular avalanche flows are a hyperbolic system determining the distribution depth and depth‐averaged velocity components tangential to sliding bed. We review point out geometrical complexities which these have been generalized. Because hyperbolicity equations, successful numerical modelling is challenging, particularly when large gradients physical variables occur, e.g. for moving front or possibly formed shock waves in if velocities change from...
Velocity and depth are crucial field variables to describe the dynamics of avalanches sand or soil snow draw conclusions about their flow behavior. In this paper we present new results velocity measurements in granular laboratory comparison with theoretical predictions. Particle image velocimetry measurement technique is introduced used measure distribution free surface unsteady flows non-transparent quartz particles down a curved chute merging into horizontal plane from initiation runout...
Abstract In this study, we investigate the heat transfer problem in a viscous fluid over an oscillatory infinite sheet with slip condition. The is moved back and forth its own plane. derived involves dimensionless parameter indicating relative magnitude of frequency to stretching rate. A system non‐linear partial differential equations solved numerically using finite‐difference scheme, which coordinate transformation employed transform semi‐infinite physical space bounded computational...