Low-velocity granular drag in reduced gravity

D. J. Costantino; J. Bartell; K. Scheidler; P. Schiffer

doi:10.1103/PhysRevE.83.011305

Low-velocity granular drag in reduced gravity

D. J. Costantino, J. Bartell, K. Scheidler, P. Schiffer

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

We probe the dependence of the low-velocity drag force in granular materials on the effective gravitational acceleration (g_eff) through studies of spherical granular materials saturated within fluids of varying density. We vary g_eff by a factor of 20, and we find that the granular drag is proportional to g_eff, i.e. that the granular drag, F_probe, on a vertical cylinder follows the expected relation F _probe=ηρ_graing_effd _probehprobe2 where the drag is related to the probe's depth of insertion, h_probe; the probe's diameter, d_probe; the grain material's density, ρ_grain; and a dimensionless constant, η. The dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data.

Original language	English (US)
Article number	011305
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	83
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevE.83.011305
State	Published - Jan 31 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Statistical and Nonlinear Physics
Statistics and Probability

Access to Document

10.1103/PhysRevE.83.011305

Cite this

@article{c1ded9b52d714ece9e94b79163184c70,

title = "Low-velocity granular drag in reduced gravity",

abstract = "We probe the dependence of the low-velocity drag force in granular materials on the effective gravitational acceleration (geff) through studies of spherical granular materials saturated within fluids of varying density. We vary geff by a factor of 20, and we find that the granular drag is proportional to geff, i.e. that the granular drag, Fprobe, on a vertical cylinder follows the expected relation F probe=ηρgraingeffd probehprobe2 where the drag is related to the probe's depth of insertion, hprobe; the probe's diameter, dprobe; the grain material's density, ρgrain; and a dimensionless constant, η. The dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data.",

author = "Costantino, {D. J.} and J. Bartell and K. Scheidler and P. Schiffer",

year = "2011",

month = jan,

day = "31",

doi = "10.1103/PhysRevE.83.011305",

language = "English (US)",

volume = "83",

journal = "Physical Review E - Statistical, Nonlinear, and Soft Matter Physics",

issn = "1539-3755",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Low-velocity granular drag in reduced gravity

AU - Costantino, D. J.

AU - Bartell, J.

AU - Scheidler, K.

AU - Schiffer, P.

PY - 2011/1/31

Y1 - 2011/1/31

N2 - We probe the dependence of the low-velocity drag force in granular materials on the effective gravitational acceleration (geff) through studies of spherical granular materials saturated within fluids of varying density. We vary geff by a factor of 20, and we find that the granular drag is proportional to geff, i.e. that the granular drag, Fprobe, on a vertical cylinder follows the expected relation F probe=ηρgraingeffd probehprobe2 where the drag is related to the probe's depth of insertion, hprobe; the probe's diameter, dprobe; the grain material's density, ρgrain; and a dimensionless constant, η. The dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data.

AB - We probe the dependence of the low-velocity drag force in granular materials on the effective gravitational acceleration (geff) through studies of spherical granular materials saturated within fluids of varying density. We vary geff by a factor of 20, and we find that the granular drag is proportional to geff, i.e. that the granular drag, Fprobe, on a vertical cylinder follows the expected relation F probe=ηρgraingeffd probehprobe2 where the drag is related to the probe's depth of insertion, hprobe; the probe's diameter, dprobe; the grain material's density, ρgrain; and a dimensionless constant, η. The dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data.

UR - http://www.scopus.com/inward/record.url?scp=79951717759&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79951717759&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.83.011305

DO - 10.1103/PhysRevE.83.011305

M3 - Article

C2 - 21405691

AN - SCOPUS:79951717759

SN - 1539-3755

VL - 83

JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

IS - 1

M1 - 011305

ER -

Low-velocity granular drag in reduced gravity

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this