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Imperfect pitchfork bifurcation in asymmetric two-compartment granular gas |
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| Authors: | Zhang Yin Li Yin-Chang Liu Rui Cui Fei-Fei Pierre Evesque and Hou Mei-Ying |
| Affiliation: | [1]Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China [2]Department of Physics, Beijing Institute of Technology, Beijing 100081, China [3]Laboratory MSSMat, UMR 8579 CNRS, Ecole Centrale Paris, 92295 Chatenay-Malabry, France |
| Abstract: | The clustering behavior of a mono-disperse granular gas is experimentally studied in an asymmetric two-compartment setup. Unlike the random clustering in either compartment in the case of symmetric configuration when lowering the shaking strength to below a critical value, the directed clustering is observed, which corresponds to an imperfect pitchfork bifurcation. Numerical solutions of the flux equation using a modified simple flux function show qualitative agreements with the experimental results. The potential application of this asymmetric structure is discussed. |
| Keywords: | compartmentalized granular gases directed clustering imperfect pitchfork bifurcation |
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