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- W4313487662 endingPage "113456" @default.
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- W4313487662 abstract "A slender body’s impact and water entry generate a violent flow with the free surface, time-dependent hydrodynamic loads, and motion or structural responses. The strong three-dimensional effects of the two-phase flow amplify the computational cost of predicting the hydrodynamic flows accurately with the free surface. This paper proposed a high-efficiency Smoothed Particle Hydrodynamics (SPH) model to simulate the oblique water entry of a cylinder. The number of particles is almost 50 million. The numerical model is validated by comparison with the experimental data and the convergence study of particle resolution. The results show that the cavity may shift transversely due to the unbalanced pressure gradients. The transverse shift is stronger with a smaller entry angle. The results are compared with Logvinovich’s model, which shows that Logvinovich’s model can accurately predict the shape of the cavity away from the splash, whereas the SPH model can accurately predict violent deformation, sealing, and breaking of the free surface in all stages of cavity evolution. The splash dynamics are quantified, benefiting from the sharp interface computed by the SPH method of high resolution. The splash can obtain more kinetic energy when the entry angle is small. Besides, The pinch-off pattern is more complicated than the vertical water entry due to the transverse shift of the cavity. Two columnar bubbles are separated from the cavity due to the transverse shift of the cavity when the entry angle is small." @default.
- W4313487662 created "2023-01-06" @default.
- W4313487662 creator A5042263714 @default.
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- W4313487662 date "2023-02-01" @default.
- W4313487662 modified "2023-09-27" @default.
- W4313487662 title "Numerical analysis of cavity deformation of oblique water entry using a multi-resolution two-phase SPH method" @default.
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- W4313487662 doi "https://doi.org/10.1016/j.oceaneng.2022.113456" @default.
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