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Volumn 72, Issue 1, 1994, Pages 172-175

Transition to parametric wave patterns in a vertically oscillated granular layer

Author keywords

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Indexed keywords


EID: 0010312352     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.72.172     Document Type: Article
Times cited : (334)

References (21)
  • 13
    • 84927888530 scopus 로고    scopus 로고
    • Parametric granular waves have been previously observed in a one-dimensional configuration (a narrow channel);
  • 14
    • 84927888529 scopus 로고    scopus 로고
    • the periodicity of these waves was mainly imposed by boundary conditions, while in our case the wave number appears to be intrinsic.
  • 18
    • 84927888527 scopus 로고    scopus 로고
    • A rough estimate of δ t is δ H /Vc, where Vc is the impact velocity and δ H the maximum dilation of the layer. Assuming that Vcapprox 2 π f A, we have δ t approx 2 π f δ H / Γ g. Thus the spreading of the collision time is negligible when Γ g / 2 π f2δ H >> 1 (δ t << 1/f). We have little insight about δ H; it is an increasing function of H and a slowly varying function of A.
  • 19
    • 84927888526 scopus 로고    scopus 로고
    • Particles in contact with the bottom of the container cannot lose contact first because, in that case, an air flow would be needed to fill the gap left by the relative motion of the layer. The motion of particles close to the free surface does not require such a flow.
  • 20
    • 84927888525 scopus 로고    scopus 로고
    • See, for instance, L. D. Landau and E. M. Lifshitz, Fluid Mechanics (Pergamon, New York, 1984), p. 36.
  • 21
    • 84927888524 scopus 로고    scopus 로고
    • This interpretation suggests that parametrically excited granular waves should disappear in materials with a very low coefficient of restitution.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.