Issue |
Europhys. Lett.
Volume 71, Number 4, August 2005
|
|
---|---|---|
Page(s) | 576 - 582 | |
Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
DOI | https://doi.org/10.1209/epl/i2005-10112-5 | |
Published online | 20 July 2005 |
Effect of drum-grain-operating parameters on the flow rate through the orifices on the rotating drum
Agricultural Engineering Department, North Eastern Regional Institute of Science and Technology - Nirjuli-791109, Itanagar Arunachal Pradesh, India
Received:
20
January
2005
Accepted:
9
June
2005
The flow of granular material in a rotating cylinder is common in
many industrial applications. In agriculture, a paddy sowing
equipment called drum seeder has the orifices on the edges of a
rotating cylindrical drum, through which the paddy grains fall
out during the operation. The flow rate depends on various drum,
grain and operating parameters. An investigation was undertaken
to study the effect of the various drum, grain and operating
parameters on the flow rate and develop certain empirical
equations for the flow rate. The study revealed that the spacing
of orifice, diameter of orifice, percent fill of drum and speed
of rotation of the drum significantly affect the flow rate.
However, the flow rate is independent of the percent fill of
grains in the drum up to the orifice diameter of 1.28 times the
equivalent grain diameter when the spacing of orifices is in the
range of 3–4 times the orifice diameter and speed of operation
varied from 18.83 to 47.17.
PACS: 45.70.Mg – Granular flow: mixing, segregation and stratification / 83.80.Fg – Granular solids
© EDP Sciences, 2005
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