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- W2516848988 abstract "During the last two decades, there has been a significant increase in Wind-Driven Rain (WDR) erosion studies, and it is now well known that soil detachment and sediment transport processes differ under WDR conditions compared to those under Wind-Free Rain (WFR). Raindrop motion using the straight-line physics of WFR cannot elucidate that using the vector physics of WDR (Erpul et al., 2013a, 2013b). Accordingly, sub-processes associated with onimpact (splash corona formation or splash detachment) and after-impact (splash transport) of the WDR erosion also change substantially. On one hand, depending upon the decreases in the compressive stress as lateral jets are well developed, a deep symmetric corona formation becomes much more limited while a shallow asymmetric corona prevails (Erpul et al., 2002). On the other hand, the WDR splash trajectory becomes almost unidirectional in the prevailing wind direction unlike the radial sand splashes of WFR (Erpul et al., 2005). In this research, the effects of WDR on sand detachment were studied under various obliquities different magnitudes of raindrop compressive and lateral stresses with a two dimensional experimental set-up in the wind tunnel facility of the International Center for Eremology (ICE), Ghent University, Belgium (Gabriels et al., 1997; Cornelis et al., 2004). During the experiments, sand particles in splash cups were exposed to both WFR and WDR driven by horizontal wind velocities of 6.4, 8.9 and 12.8 m s under rainfall intensities of 50, 60, 75 and 90 mm h to assess sand detachment rate (D, g m s ). Together with the varied WDR intensities and fall trajectories of synchronized wind and rain simulations, two different sand sizes (2.0 mm & 0.20.5 mm) and sand moisture conditions (dry & wet) were also used. The partition of normal and horizontal kinetic energy fluxes (KEx and KEy, respectively) is graphed in Figure 1, which clearly shows that the experiments were performed under increasing lateral jets of wind-driven raindrops as their compressive normal components remained almost unchanged for WDR with wind of 6.4, 8.9 and 12.8 m s velocities." @default.
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- W2516848988 date "2016-01-01" @default.
- W2516848988 modified "2023-09-27" @default.
- W2516848988 title "Sand Detachment with Shallow Asymmetric Corona Formation under Well-Developed Lateral Jets of Wind-Driven Raindrop Impacts" @default.
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