Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1641-1660 of 3826
-
Compatibility Assessment of Drip Irrigation Laterals
(American Society of Civil Engineers, 2011)Emitters inserted in drip irrigation laterals cause local head loss, generally estimated as a product of a coefficient and the velocity head. This local head loss coefficient and the emitter discharge curve hydraulic ... -
Road Runoff Water-Quality Mitigation by Permeable Modular Concrete Pavers
(American Society of Civil Engineers, 2011)Discharge from a -
Estimation of Reference Potential Evapotranspiration with Focus on Vegetation Science—the EmPEst Software
(American Society of Civil Engineers, 2011)Owing to the difficulties in measuring daily reference potential evapotranspiration, its estimation by means of the ASCE Penman-Monteith approach and various other empirical equations that are less demanding in terms of ... -
Most Hydraulically Efficient Riprap-Lined Drainage Channels
(American Society of Civil Engineers, 2011)Dimensions of the most hydraulically efficient trapezoidal and triangular drainage channels (that is, those with the smallest possible cross-section areas) whose banks are lined with loose rock riprap are found along with ... -
Experimental Studies on Flow over Labyrinth Weir
(American Society of Civil Engineers, 2012)Labyrinth spillway is the effective and economical solution to increase the discharge by increasing the spillway crest length without an associated increase in structure width. Use of labyrinth spillway is particularly ... -
Characteristics of Flow around Open Channel 90° Bends with Vanes
(American Society of Civil Engineers, 2011)Sharp open-channel bends are commonly encountered in hydraulic engineering design. Disturbances such as secondary flows and flow separation caused by the bend may persist for considerable distances in the downstream channel. ... -
Evaluation of Water and Energy Use in Pressurized Irrigation Networks in Southern Spain
(American Society of Civil Engineers, 2011)A procedure for evaluating water and energy use in pressurized irrigation networks was developed. Performance indicators were derived from the International Program for Technology and Research in Irrigation and Drainage ... -
Effect of Stilling Basin Geometry on Clear Water Scour Morphology Downstream of a Block Ramp
(American Society of Civil Engineers, 2011)The scour mechanism downstream of a block ramp in clear water conditions is quite a complex phenomenon that depends on several parameters. Majors role are played by ramp configuration, hydraulic conditions (downstream ... -
Modified G and GAVG Correction Factors for Laterals with Multiple Outlets and Outflow
(American Society of Civil Engineers, 2011)Anwar’s friction correction factor, -
Infiltration Evaluation Strategy for Border Irrigation Management
(American Society of Civil Engineers, 2011)Water infiltration into soil plays a vital role in the performance of surface irrigation. Real-time information on infiltration characteristics is necessary to use surface irrigation models to manage irrigation systems. ... -
Hydraulics of Stacked Drop Manholes
(American Society of Civil Engineers, 2011)This paper presents the results of an experimental investigation on flows inside stacked drop manholes (SDM). An SDM consists of two identical rectangular or square manhole chambers stacked together at an elevation difference. ... -
Behavior of Submerged Ogee Crest Weir Discharge Coefficients
(American Society of Civil Engineers, 2011)Weir head-discharge relationships are typically described using the discharge coefficient-dependent standard weir equation. The submerged weir (tailwater exceeds the weir crest elevation) head-discharge relationship can ... -
Discussion of “Investigation of Flow through Orifices in Riser Pipes” by P. D. Prohaska, A. A. Khan, and N. B. Kaye
(American Society of Civil Engineers, 2011) -
Constructed Storm-Water Wetland Installation and Maintenance: Are We Getting It Right?
(American Society of Civil Engineers, 2011) -
Rapid Graphical Detection of Weakness Problems in Numerical Simulation Infiltration Models Using a Linearized Form Equation
(American Society of Civil Engineers, 2011)Recently, Valiantzas proposed a new two-parameter vertical infiltration equation that can be transformed to a linearized-form equation that essentially states that the shape of the cumulative infiltration data, when presented ... -
Evaluation of Different Seed Mixtures for Grass Establishment to Mitigate Soil Erosion on Steep Slopes of Railway Batters
(American Society of Civil Engineers, 2011)Unpredictable rainstorms can pose greater risks of soil erosion on newly formed unprotected railway batters. A bioengineering approach consisting of revegetation can be an effective tool for soil-erosion control. Perennial ... -
Evaluating the Potential of Quarry Lakes for Supplemental Irrigation
(American Society of Civil Engineers, 2011)Population growth coupled with industrialization, increasing effects of climate change, and increasingly stringent water management regulations regarding the conservation of aquatic life are resulting in previously unknown ... -
Wetting Pattern Models for Drip Irrigation: New Empirical Model
(American Society of Civil Engineers, 2011)Reliable information about the wetted dimensions of soil under drip irrigation helps designers to determine optimal emitter flow rates and spacings to reduce system equipment costs and provide better soil water conditions ... -
Estimating Air Vapor Pressure in a Semiarid Region Using FAO-56 Methodology
(American Society of Civil Engineers, 2011)This paper presents three models for the estimation of vapor pressure from temperature and humidity data as suggested by Food and Agriculture Organization (FAO) Irrigation and Drainage Paper No. 56 (FAO-56) that have been ... -
Discussion of “Simplified Method for Sizing Laterals with Two or More Diameters” by Muluneh Yitayew
(American Society of Civil Engineers, 2012)