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- Title
Pressure and motion of dry sand: translation of Hagen’s paper from 1852.
- Authors
Tighe, Brian P.; Sperl, Matthias
- Abstract
In a remarkable paper from 1852, Gotthilf Heinrich Ludwig Hagen measured and explained two fundamental aspects of granular matter: The first effect is the saturation of pressure with depth in a static granular system confined by silo walls – generally known as the Janssen effect. The second part of his paper describes the dynamics observed during the flow out of the container – today often called the Beverloo law – and forms the foundation of the hourglass theory. A translation of the original 1852 paper is presented after a brief introduction.
- Subjects
PRESSURE; MOTION; SAND; HOURGLASSES; TIME measurements; DIMENSIONAL analysis; GRANULAR materials; LAMINAR flow
- Publication
Granular Matter, 2007, Vol 9, Issue 3/4, p141
- ISSN
1434-5021
- Publication type
Article
- DOI
10.1007/s10035-006-0027-x