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Volumn 79, Issue 6, 2009, Pages

Expanding holes driven by convectionlike flow in vibrated dense suspensions

Author keywords

[No Author keywords available]

Indexed keywords

1D SYSTEMS; 2-D SYSTEMS; CRITICAL VALUE; DENSE SUSPENSION; DISPERSED POWDER; FINITE-AMPLITUDE PERTURBATIONS; FLAT SURFACES; MEAN DENSITY; QUASI-ONE-DIMENSIONAL; SILICONE OIL; SIMPLE MODEL; SURFACE INSTABILITY; VIBRATION ACCELERATION; VIBRATION FREQUENCY;

EID: 67649862002     PISSN: 15393755     EISSN: 15502376     Source Type: Journal    
DOI: 10.1103/PhysRevE.79.066308     Document Type: Article
Times cited : (17)

References (23)
  • 8
    • 84869367231 scopus 로고    scopus 로고
    • The nonmatched density of glass beads and silicone oil could affect the result. We therefore performed experiments in quasi-1D and quasi-2D systems with density-matched suspensions using 100 μm polyethylene powder (0.958 g/ cm3) and 30 mm2 /s silicone oil (0.955 g/ cm3). We found no significant difference in the result between the non-density-matched and density-matched suspensions, and we conclude that sedimentation is not crucial
    • The nonmatched density of glass beads and silicone oil could affect the result. We therefore performed experiments in quasi-1D and quasi-2D systems with density-matched suspensions using 100 μm polyethylene powder (0.958 g/ cm3) and 30 mm2 /s silicone oil (0.955 g/ cm3). We found no significant difference in the result between the non-density-matched and density-matched suspensions, and we conclude that sedimentation is not crucial.
  • 11
    • 37649032651 scopus 로고    scopus 로고
    • 10.1103/PhysRevE.70.051808
    • B. M. Besancon and P. F. Green, Phys. Rev. E 70, 051808 (2004). 10.1103/PhysRevE.70.051808
    • (2004) Phys. Rev. e , vol.70 , pp. 051808
    • Besancon, B.M.1    Green, P.F.2
  • 13
  • 14
    • 84869338271 scopus 로고    scopus 로고
    • If we wait more than a few minutes after stirring, which is comparable to sedimentation time, the onset acceleration is constant at ∼190 m/ s2 and shows no dependence on the mean packing fraction. In this case, the local packing fraction near the bottom becomes higher than the mean packing fraction, so the lack of dependence of the mean packing fraction implies that the local packing fraction near the bottom, rather than the mean packing fraction, determines the onset acceleration.
    • If we wait more than a few minutes after stirring, which is comparable to sedimentation time, the onset acceleration is constant at ∼190 m/ s2 and shows no dependence on the mean packing fraction. In this case, the local packing fraction near the bottom becomes higher than the mean packing fraction, so the lack of dependence of the mean packing fraction implies that the local packing fraction near the bottom, rather than the mean packing fraction, determines the onset acceleration.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.