eprintid: 452
rev_number: 12
eprint_status: archive
userid: 1
dir: disk0/00/00/04/52
datestamp: 2010-11-20 21:52:47
lastmod: 2017-01-13 20:36:30
status_changed: 2010-11-20 21:52:47
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Trout, Thomas J.
title: Orifice Plates for Furrow Flow Measurement: Part I - Calibration
ispublished: pub
subjects: research
subjects: autoclass
divisions: d_unclass
abstract: ORIFICES, due to their discharge sensitivity to
head, are potentially the most accurate open
channel flow measurement device and consequently, the
best device for determining furrow infiltration rates by
the inflow-outflow method. Laboratory calibration
determined that orifices under submerged flow
conditions are insensitive to boundaries as close as one-half
diameter from an edge, allowing practical field use
of multi-holed orifice plates in furrows. Submerged flow
discharge coefficient for square-edged orifices with the
plate thickness less than one-third of the diameter is
0.625. Free flow coefficients vary both with orifice size
and head.
date: 1986
date_type: published
id_number: 0570
full_text_status: public
publication: Transaction of the ASAE
volume: 29
number: 1
pagerange: 103-106
refereed: unknown
citation:   Trout, Thomas J.  (1986) Orifice Plates for Furrow Flow Measurement: Part I - Calibration.   Transaction of the ASAE.      29(1):103-106.               
document_url: https://eprints.nwisrl.ars.usda.gov/id/eprint/452/1/570.pdf