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Wavelength Selection of Patterns in a Vibrated Granular Layer
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| SHI Xiao-Dong;JIN Guo-Jun;MA Yu-Qiang |
| National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 |
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| Cite this article: |
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SHI Xiao-Dong, JIN Guo-Jun, MA Yu-Qiang 2003 Chin. Phys. Lett. 20 250-252 |
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Abstract We present a numerical study on the pattern formation in a two-dimensional vibrated granular layer by a molecular dynamics algorithm. Through analysing the granular density distribution, we can explore the inner movement process of particles. It is confirmed that there are a dispersive regime and a saturation regime for frequency dependence, between which a critical frequency exists. It is found that there is another saturation regime for thickness dependence. The wavelength increases with increasing layer thickness, but there is a critical thickness after which the wavelength is unchanged.
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| Keywords:
45.70.Qj
47.54.+r
81.05.Rm
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Published: 01 February 2003
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