relation: https://eprints.nwisrl.ars.usda.gov/id/eprint/452/
title: Orifice Plates for Furrow Flow Measurement: Part I - Calibration
creator: Trout, Thomas J.
subject: Research methodology
subject: Mass Import - autoclassified (may be erroneous)
description: 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
type: Article
type: NonPeerReviewed
format: application/pdf
language: en
identifier: https://eprints.nwisrl.ars.usda.gov/id/eprint/452/1/570.pdf
identifier:   Trout, Thomas J.  (1986) Orifice Plates for Furrow Flow Measurement: Part I - Calibration.   Transaction of the ASAE.      29(1):103-106.               
relation: 0570
identifier: 0570