Three-Dimensional Transient Heat, Mass, Momentum, and Species Transfer in the Stored Grain Ecosystem: Part II. Model Validation

2013 ◽  
Vol 56 (1) ◽  
pp. 189-201 ◽  
Author(s):  
J. Lawrence ◽  
D. E. Maier ◽  
R. L. Stroshine
2017 ◽  
Author(s):  
Albrecht v. Boetticher ◽  
Jens M. Turowski ◽  
Brian W. McArdell ◽  
Dieter Rickenmann ◽  
Marcel Hürlimann ◽  
...  

Abstract. Here we present validation tests of the fluid dynamic solver presented in in v. Boetticher et al. (2016), simulating both laboratory-scale and large-scale debris-flow experiments. The new solver combines a Coulomb viscosplastic rheological model with a Herschel-Bulkley model based on material properties and rheological characteristics of the analysed debris flow. For the selected experiments in this study, all necessary material properties were known – the content of sand, clay (including its mineral composition) and gravel (including its friction angle) as well as the water content. We show that given these measured properties, two model parameters are sufficient for calibration, and a range of experiments with different material compositions can be reproduced by the model without recalibration. One calibration parameter, the Herschel–Bulkley exponent, was kept constant for all simulations. The model validation focuses on different case studies illustrating the sensitivity of debris flows to water and clay content, channel curvature, channel roughness and the angle of repose. We characterize the accuracy of the model using experimental observations of flow head positions, front velocities, run-out patterns and basal pressures.


2004 ◽  
Vol 132 (12) ◽  
pp. 2832-2844 ◽  
Author(s):  
R. Ford ◽  
C. C. Pain ◽  
M. D. Piggott ◽  
A. J. H. Goddard ◽  
C. R. E. de Oliveira ◽  
...  

1994 ◽  
Author(s):  
M. de Jager ◽  
A. Sauren ◽  
J. Thunnissen ◽  
J. Wismans

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