TY - JOUR
T1 - Crater formation during raindrop impact on sand
AU - de Jong, Rianne
AU - Zhao, Song-Chuan
AU - van der Meer, Devaraj
PY - 2017/4/5
Y1 - 2017/4/5
N2 - After a raindrop impacts on a granular bed, a crater is formed as both drop and target deform. After an initial, transient, phase in which the maximum crater depth is reached, the crater broadens outwards until a final steady shape is attained. By varying the impact velocity of the drop and the packing density of the bed, we find that avalanches of grains are important in the second phase and hence affect the final crater shape. In a previous paper, we introduced an estimate of the impact energy going solely into sand deformation and here we show that both the transient and final crater diameter collapse with this quantity for various packing densities. The aspect ratio of the transient crater is however altered by changes in the packing fraction.
AB - After a raindrop impacts on a granular bed, a crater is formed as both drop and target deform. After an initial, transient, phase in which the maximum crater depth is reached, the crater broadens outwards until a final steady shape is attained. By varying the impact velocity of the drop and the packing density of the bed, we find that avalanches of grains are important in the second phase and hence affect the final crater shape. In a previous paper, we introduced an estimate of the impact energy going solely into sand deformation and here we show that both the transient and final crater diameter collapse with this quantity for various packing densities. The aspect ratio of the transient crater is however altered by changes in the packing fraction.
KW - 2022 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85017173402&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.95.042901
DO - 10.1103/PhysRevE.95.042901
M3 - Article
AN - SCOPUS:85017173402
SN - 2470-0045
VL - 95
JO - Physical review E: covering statistical, nonlinear, biological, and soft matter physics
JF - Physical review E: covering statistical, nonlinear, biological, and soft matter physics
IS - 4
M1 - 042901
ER -