<mods:mods version="3.3" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><mods:titleInfo><mods:title>Orifice Plates for Furrow Flow Measurement: Part I - Calibration</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Thomas J.</mods:namePart><mods:namePart type="family">Trout</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods: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.</mods:abstract><mods:classification authority="lcc">Research methodology</mods:classification><mods:classification authority="lcc">Mass Import - autoclassified (may be erroneous)</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">1986</mods:dateIssued></mods:originInfo><mods:genre>Article</mods:genre></mods:mods>