Flying avalanches

Kristin Martha Hákonardóttir; Andrew J. Hogg; Jenny Batey; Andrew W. Woods

Flying avalanches

Kristin Martha Hákonardóttir^*, Andrew J. Hogg, Jenny Batey, Andrew W. Woods

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

32 Citations (Scopus)

Abstract

Rapidly flowing avalanches are highly destructive natural phenomena, especially when they interact with buildings or other man-made structures. Here we report a new experimental study of the interaction of a rapid granular flow with a solid barrier, which is of a comparable height to the flow depth. Our experiments show that the flow detaches from the top of the obstacle as a coherent granular jet, the motion of which is well described by theory for an inviscid jet of fluid. As well as giving fundamental new insights into the behaviour of granular flows, the results have important practical consequences for the design of dams used to provide protection from snow avalanches.

Translated title of the contribution	Flying avalanches
Original language	English
Article number	art. no. 2191
Journal	Geophysical Research Letters
Volume	30
Issue number	23
Publication status	Published - 1 Dec 2003

Bibliographical note

Publisher: Amer Geophysical Union
Other identifier: IDS number 756MD

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abstract = "Rapidly flowing avalanches are highly destructive natural phenomena, especially when they interact with buildings or other man-made structures. Here we report a new experimental study of the interaction of a rapid granular flow with a solid barrier, which is of a comparable height to the flow depth. Our experiments show that the flow detaches from the top of the obstacle as a coherent granular jet, the motion of which is well described by theory for an inviscid jet of fluid. As well as giving fundamental new insights into the behaviour of granular flows, the results have important practical consequences for the design of dams used to provide protection from snow avalanches.",

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AU - Hákonardóttir, Kristin Martha

AU - Hogg, Andrew J.

AU - Batey, Jenny

AU - Woods, Andrew W.

N1 - Publisher: Amer Geophysical Union Other identifier: IDS number 756MD

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Rapidly flowing avalanches are highly destructive natural phenomena, especially when they interact with buildings or other man-made structures. Here we report a new experimental study of the interaction of a rapid granular flow with a solid barrier, which is of a comparable height to the flow depth. Our experiments show that the flow detaches from the top of the obstacle as a coherent granular jet, the motion of which is well described by theory for an inviscid jet of fluid. As well as giving fundamental new insights into the behaviour of granular flows, the results have important practical consequences for the design of dams used to provide protection from snow avalanches.

AB - Rapidly flowing avalanches are highly destructive natural phenomena, especially when they interact with buildings or other man-made structures. Here we report a new experimental study of the interaction of a rapid granular flow with a solid barrier, which is of a comparable height to the flow depth. Our experiments show that the flow detaches from the top of the obstacle as a coherent granular jet, the motion of which is well described by theory for an inviscid jet of fluid. As well as giving fundamental new insights into the behaviour of granular flows, the results have important practical consequences for the design of dams used to provide protection from snow avalanches.

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M3 - Article (Academic Journal)

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

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ER -