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| SPH simulation of liquid drops impact on elastic substrates based on a surface force model |
| Received:June 17, 2019 Revised:July 28, 2019 |
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| DOI：10.7511/jslx20190617002 |
| KeyWord:SPH numerical algorithm free surface droplet fluid-solid interaction elastic substrates |
| Author | Institution |
| 董祥伟 |
中国石油大学华东, 机电工程学院, 青岛 |
| 李静 |
中国石油大学华东, 机电工程学院, 青岛 |
| 黄小平 |
中国石油大学华东, 储运与建筑工程学院, 青岛 |
| 刘建林 |
中国石油大学华东, 储运与建筑工程学院, 青岛 |
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| Abstract: |
| A fluid-solid interaction model for the simulation of liquid drops impinging on elastic substrates was established by using the smoothed particle hydrodynamics (SPH) method.The SPH discrete equations for describing the motion of viscous fluids and elastic solids were introduced,and corresponding numerical schemes were given.The artificial diffusion terms were introduced to deal with the numerical oscillation in the standard SPH.To simulate the surface tension effect on liquid drops,by accurately detecting the boundary particles,the parameters including surface normal and curvature were calculated through the Lagrange interpolation.Combined with the continuous surface force (CSF) method in the interface theory,the surface force model for free surface droplets was proposed.The simulation result of square droplet deformation was consistent with the Laplace equation.Subsequently,the model was used to simulate the impact of 1.0 mm-diameter water drops on two types of thin-plate substrates.The effect of substrate deformation on droplet behaviors,including spreading,recoiling,and bouncing,were analyzed. |
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