Reservoir formation in shallow granular flows through a contraction

M.Y.M. Al Tarazi, Onno Bokhove, J.A.M. Kuipers, M. van Sint Annaland, A.W. Vreman

Research output: Book/ReportReportProfessional

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Abstract

We consider flow of dry granular matter down an inclined chute with a localized contraction. Measurements and analysis show that changes in particle volume fraction are important, especially across granular bores. For fixed upstream conditions and depending on the nozzle width of the contraction, we observe either small oblique jumps, a reservoir with a steady jump, or a reservoir with an upstream traveling bore. Shallow layer theory extended to include porosity changes qualitatively predicts these regimes. Implications for volcanic debris flows are discussed.
Original languageUndefined
Place of PublicationEnschede
PublisherUniversity of Twente
Publication statusPublished - 2005

Publication series

NameMemoranda Mathematical Sciences
No.1788
ISSN (Print)1566-7782

Keywords

  • EWI-3608
  • METIS-227271
  • IR-53897
  • MSC-86A60
  • MSC-82D99
  • MSC-74A30

Cite this

Al Tarazi, M. Y. M., Bokhove, O., Kuipers, J. A. M., van Sint Annaland, M., & Vreman, A. W. (2005). Reservoir formation in shallow granular flows through a contraction. (Memoranda Mathematical Sciences; No. 1788). Enschede: University of Twente.
Al Tarazi, M.Y.M. ; Bokhove, Onno ; Kuipers, J.A.M. ; van Sint Annaland, M. ; Vreman, A.W. / Reservoir formation in shallow granular flows through a contraction. Enschede : University of Twente, 2005. (Memoranda Mathematical Sciences; 1788).
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Al Tarazi, MYM, Bokhove, O, Kuipers, JAM, van Sint Annaland, M & Vreman, AW 2005, Reservoir formation in shallow granular flows through a contraction. Memoranda Mathematical Sciences, no. 1788, University of Twente, Enschede.

Reservoir formation in shallow granular flows through a contraction. / Al Tarazi, M.Y.M.; Bokhove, Onno; Kuipers, J.A.M.; van Sint Annaland, M.; Vreman, A.W.

Enschede : University of Twente, 2005. (Memoranda Mathematical Sciences; No. 1788).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Reservoir formation in shallow granular flows through a contraction

AU - Al Tarazi, M.Y.M.

AU - Bokhove, Onno

AU - Kuipers, J.A.M.

AU - van Sint Annaland, M.

AU - Vreman, A.W.

N1 - Imported from MEMORANDA

PY - 2005

Y1 - 2005

N2 - We consider flow of dry granular matter down an inclined chute with a localized contraction. Measurements and analysis show that changes in particle volume fraction are important, especially across granular bores. For fixed upstream conditions and depending on the nozzle width of the contraction, we observe either small oblique jumps, a reservoir with a steady jump, or a reservoir with an upstream traveling bore. Shallow layer theory extended to include porosity changes qualitatively predicts these regimes. Implications for volcanic debris flows are discussed.

AB - We consider flow of dry granular matter down an inclined chute with a localized contraction. Measurements and analysis show that changes in particle volume fraction are important, especially across granular bores. For fixed upstream conditions and depending on the nozzle width of the contraction, we observe either small oblique jumps, a reservoir with a steady jump, or a reservoir with an upstream traveling bore. Shallow layer theory extended to include porosity changes qualitatively predicts these regimes. Implications for volcanic debris flows are discussed.

KW - EWI-3608

KW - METIS-227271

KW - IR-53897

KW - MSC-86A60

KW - MSC-82D99

KW - MSC-74A30

M3 - Report

T3 - Memoranda Mathematical Sciences

BT - Reservoir formation in shallow granular flows through a contraction

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Al Tarazi MYM, Bokhove O, Kuipers JAM, van Sint Annaland M, Vreman AW. Reservoir formation in shallow granular flows through a contraction. Enschede: University of Twente, 2005. (Memoranda Mathematical Sciences; 1788).