Experimental investigation of vibration-induced bulk solids transport and segregation. Quarterly report ending March 31, 1996

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An experimental investigation of the motion of a single large sphere in a bed of dry granular material subjected to vertical vibration is presented. We have studied the rise time of the sphere as a function of vibration parameters, frequency and amplitude. While previous results report a decreasing rise time with increasing relative acceleration, we evidence the existence of a critical frequency where the rise time jumps to greater values before decreasing again. We also show that the rise time scales with the velocity amplitude of vibration and the transition corresponds approximately to a doubling of rise time. The results ... continued below

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7 p.

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Rosato, A.D. & Dave, R.N. September 1, 1996.

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Description

An experimental investigation of the motion of a single large sphere in a bed of dry granular material subjected to vertical vibration is presented. We have studied the rise time of the sphere as a function of vibration parameters, frequency and amplitude. While previous results report a decreasing rise time with increasing relative acceleration, we evidence the existence of a critical frequency where the rise time jumps to greater values before decreasing again. We also show that the rise time scales with the velocity amplitude of vibration and the transition corresponds approximately to a doubling of rise time. The results reported are over a rather narrow range of input accelerations, and generally involve gross phenomena of heaping and fluidization. Observations of the dynamic trajectory of the rising particle are also reported through the use of a novel non-intrusive particle tracking system. 16 refs., 7 figs.

Physical Description

7 p.

Notes

OSTI as DE96050251

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  • Other Information: PBD: [1996]

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  • Other: DE96050251
  • Report No.: DOE/PC/95203--T2
  • Grant Number: FG22-95PC95203
  • DOI: 10.2172/378671 | External Link
  • Office of Scientific & Technical Information Report Number: 378671
  • Archival Resource Key: ark:/67531/metadc688248

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Nov. 30, 2015, 8:30 p.m.

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Rosato, A.D. & Dave, R.N. Experimental investigation of vibration-induced bulk solids transport and segregation. Quarterly report ending March 31, 1996, report, September 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc688248/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.