SPH METHOD WITH DIFFERENT MASS PARTICLE DISTRIBUTION&nbsp; AND ITS APPLICATION

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (22) : 62-67.

SPH METHOD WITH DIFFERENT MASS PARTICLE DISTRIBUTION AND ITS APPLICATION

Azhar Halik1, 2, Rahmatjan Imin2,Kaysar Rahman2, Mamtimin Geni1

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Abstract

The Smoothed Particle Hydrodynamics (SPH) method is a new developed pure lagrange numerical method, the major advantage of SPH is that no special treatment of the free surface is required, it is beneficial for simulating highly non-linear flows, e.g. to run up and splash around bodies. One drawback of the SPH method is that it has high computational time complexity associated with the large number of particles desirable for good flow definition. In this paper, to improve accuracy without substantially increasing computational time, a different mass particle distribution method is used for a pre-selected area where high resolution is desirable. The effectiveness of the proposed method is tested and verified with the still water problem. Then, surface waves generated by a heaving cylinder of different wave period and stroke is numerically simulated, and the simulation results are compared with the experimental data. Numerical results shows that using this method brings a significant improvement in accuracy without substantially increasing computational time.

Key words

smoothed particle hydrodynamics / wave; / heaving cylinder / different mass particle

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Azhar Halik1, 2, Rahmatjan Imin2,Kaysar Rahman2, Mamtimin Geni1 . SPH METHOD WITH DIFFERENT MASS PARTICLE DISTRIBUTION AND ITS APPLICATION[J]. Journal of Vibration and Shock, 2015, 34(22): 62-67

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