Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 179-184 |
| Journal | Granular matter |
| Volume | 14 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2012 |
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Keywords
- METIS-288425
- IR-81802
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Suction of splash after impact on dry quick sand. / Caballero Robledo, G.A.; Kelly, K.P.D.; Homan, T.A.M.; Weijs, Joost; van der Meer, Roger M.; Lohse, Detlef.
In: Granular matter, Vol. 14, No. 2, 2012, p. 179-184.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Suction of splash after impact on dry quick sand
AU - Caballero Robledo, G.A.
AU - Kelly, K.P.D.
AU - Homan, T.A.M.
AU - Weijs, Joost
AU - van der Meer, Roger M.
AU - Lohse, Detlef
PY - 2012
Y1 - 2012
N2 - It is well known that a splash occurs when an object impacts at high velocity on a liquid¿s surface. If the impact is fast enough, surface tension and air pressure gradients pull the crown-shape splash all the way towards the axis of symmetry, making it to collapse and seal the surface. In this paper we show that splash and surface sealing are also observed in impacts on soft, dry sand. We observe influence of air pressure and grains size on the shape of the splash. By tracking individual grains using high-speed imaging we calculate their acceleration, which results from gravity and drag forces. Assuming friction drag parallel, and pressure drag perpendicular to the direction of motion of grains we estimate the friction and pressure drag contributions to the drag force. Our results support the idea that pressure drag from Bernoulli effect is at the origin of the surface seal.
AB - It is well known that a splash occurs when an object impacts at high velocity on a liquid¿s surface. If the impact is fast enough, surface tension and air pressure gradients pull the crown-shape splash all the way towards the axis of symmetry, making it to collapse and seal the surface. In this paper we show that splash and surface sealing are also observed in impacts on soft, dry sand. We observe influence of air pressure and grains size on the shape of the splash. By tracking individual grains using high-speed imaging we calculate their acceleration, which results from gravity and drag forces. Assuming friction drag parallel, and pressure drag perpendicular to the direction of motion of grains we estimate the friction and pressure drag contributions to the drag force. Our results support the idea that pressure drag from Bernoulli effect is at the origin of the surface seal.
KW - METIS-288425
KW - IR-81802
U2 - 10.1007/s10035-012-0326-3
DO - 10.1007/s10035-012-0326-3
M3 - Article
VL - 14
SP - 179
EP - 184
JO - Granular matter
JF - Granular matter
SN - 1434-5021
IS - 2
ER -