Download A-10 Warthog in detail & scale - D&S Vol. 19 by Dana Bell PDF

By Dana Bell

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Garner and Fannin [GAR 10] describe the main initiation conditions for suffusion using a diagram comprising three components: material susceptibility, critical hydraulic load, and critical stress condition. 1. Parameters that modify the geometry of the porous medium The detachment of fine particles and their subsequent transport throughout the porous network of the soil requires that the pore space is sufficient. This space is conditioned by the granular distribution, which, in turn, depends on the size of the grains, their form, and the fabric.

In fact, the law regarding the stress underestimates the effects of the turbulence. The global law of erosion regarding stress or energy does not distinguish the effects of the traction stress from those of compression; however, it is only the former that needs traction resistance. While waiting to find a general law of erosion, it is possible to use the HET on a site, if the conditions of the HET are representative for the on-site conditions. 20]. The friction velocity is estimated at 1/4 of the average velocity in the largest capillary opening.

Is this a scaling effect? Future research should confirm these results and explain the nature and value of this scaling effect. 10. 5. 1. Problem of passing on the results from the laboratory to the hydraulic structure The application of erosion thresholds, measured in the laboratory with the aim of predicting on-site erosion, demands that the following three conditions be met in the laboratory: – The mechanism of erosion that is being modeled needs to be the same as the one on-site. – The velocities measured must be similar to the velocities on-site.

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