scholarly journals Experimental study of gas-fluidized granular flows with implications for pyroclastic flow emplacement

2004 ◽  
Vol 109 (B10) ◽  
Author(s):  
O. Roche ◽  
M. A. Gilbertson ◽  
J. C. Phillips ◽  
R. S. J. Sparks
Keyword(s):  
Experimental Study ◽  
Pyroclastic Flow ◽  
Granular Flows

scholarly journals Experimental study of bedrock erosion by granular flows

2008 ◽  
Vol 113 (F2) ◽  
Author(s):  
Leslie Hsu ◽  
William E. Dietrich ◽  
Leonard S. Sklar
Keyword(s):  
Experimental Study ◽  
Granular Flows ◽  
Bedrock Erosion

scholarly journals Correction to “Experimental study of bedrock erosion by granular flows”

2008 ◽  
Vol 113 (F2) ◽  
Author(s):  
Leslie Hsu ◽  
William E. Dietrich ◽  
Leonard S. Sklar
Keyword(s):  
Experimental Study ◽  
Granular Flows ◽  
Bedrock Erosion

SCALING PROPERTY OF THE DILUTE-DENSE TRANSITION IN 2D GRANULAR FLOWS

2004 ◽  
Vol 18 (17n19) ◽  
pp. 2441-2447 ◽  
Author(s):  
MEIYING HOU ◽  
WEI CHEN ◽  
TONG ZHANG ◽  
KUNQUAN LU ◽  
C. K. CHAN
Keyword(s):  
Experimental Study ◽  
Granular Flow ◽  
Granular Flows ◽  
Critical Value ◽  
Inflow Rate ◽  
Critical Rate ◽  
Jamming Transition ◽  
Variable Λ ◽  
Outflow Rate ◽  
Dense Flow

In this paper we report our experimental study of dilute-dense transition in a 2-dimensional granular flow of particle size d0 and channel width D with confined exit of width d. It is found that a maximum inflow rate Qc exists, above which the outflow changes from dilute to dense and the outflow rate Q(t) drops abruptly from Qc to a dense flow rate Qd. The re-scaled critical rate qc(≡Qc/(D/d0)) is found to be a function of a scaling variable λ only, i.e. qc~F(λ), and [Formula: see text]. The form of this new variable λ suggests that the dilute-to-dense transition is a global property of the flow; unlike the jamming transition, which depends only on [Formula: see text]. It is also found that this transition occurs when the area fraction of particles near the exit reaches a critical value 0.65±0.03.

Experimental study of two-dimensional, monodisperse, frictional-collisional granular flows down an inclined chute

2006 ◽  
Vol 18 (12) ◽  
pp. 123302 ◽  
Author(s):  
Weitao Bi ◽  
Renaud Delannay ◽  
Patrick Richard ◽  
Alexandre Valance
Keyword(s):  
Experimental Study ◽  
Granular Flows ◽  
Two Dimensional

scholarly journals Experiments on deaerating granular flows and implications for pyroclastic flow mobility

2002 ◽  
Vol 29 (16) ◽  
pp. 40-1-40-4 ◽  
Author(s):  
O. Roche ◽  
M. Gilbertson ◽  
J. C. Phillips ◽  
R. S. J. Sparks
Keyword(s):  
Pyroclastic Flow ◽  
Granular Flows ◽  
Flow Mobility

An experimental study of the elastic theory for granular flows

2016 ◽  
Vol 28 (8) ◽  
pp. 083303 ◽  
Author(s):  
Tongtong Guo ◽  
Charles S. Campbell
Keyword(s):  
Experimental Study ◽  
Granular Flows ◽  
Elastic Theory
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