مقاله Tracking methods for free surface and simulation of a liquid droplet impacting on a solid surface based on SPH : تی پی بین

خلاصه مقاله

With some popular tracking methods for free surface, simulations of several typical examples are carried out under various flow field conditions. The results show that the Smoothed Particle Hydrodynamics (SPH) method is very suitable in simulating the flow problems with a free surface. A viscous liquid droplet with an initial velocity impacting on a solid surface is simulated based on the SPH method, and the surface tension is considered by searching the free surface particles, the initial impact effect is considered by using the artificial viscosity method, boundary virtual particles and image virtual particles are introduced to deal with the boundary problem, and the boundary defect can be identified quite well. The comparisons of simulated results and experimental photographs show that the SPH method can not only exactly simulate the spreading process and the rebound process of a liquid droplet impacting on a solid surface but also accurately track the free surface particles, simulate the free-surface flow and determine the shape of the free surface due to its particle nature.

نویسندگان

Da-ming LI [ State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China ]

Ya-nan XU [ State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China ]

Ling-ling LI [ State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China ]

Hui-jiao LU [ State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China ]

Ling BAI [ State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China ]

کلمات کلیدی

Smoothed Particle Hydrodynamics (SPH) method viscous liquid droplet impacting on a solid surface free surface

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Journal of Hydrodynamics

The Journal of Hydrodynamics reflects the research activities in various areas of hydrodynamics related to ocean and ship engineering, environmental engineering, water conservancy and hydropower engineering, energy exploration, ocean and environmental engineering, and chemical engineering. These cover ship hydrodynamics, wave load and fluid-solid interactions, turbulence and boundary layer, cavitating flow and cavitation mechanics, multi-phase flow, pipe flow and open ditch flow, convection and diffusion, heat and mass transfer, bio-fluid mechanics, permeation fluid mechanics and other frontier disciplines. The journal presents the latest achievements in developing physical models and computational methods, theoretical and experimental studies, software development and test technologies. It offers a platform for exchanging experiences and information, enlivening academic thoughts and promoting the further development of hydrodynamic research and its applications in China and elsewhere.

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