Pair-production of charged Dirac particles on charged Nariai and ultracold black hole manifolds [PDF]
, 2009 Spontaneous loss of charge by charged black holes by means of pair-creation of charged Dirac particles is considered. We provide three examples of exact calculations for the spontaneous discharge process for 4D charged black holes by considering the ...
Belgiorno, F. +2 more
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Coefficient of Discharge for Free Flow Sluice Gates
Journal of King Saud University: Engineering Sciences, 1999 This paper aims to investigate the effect of sill shape located under the sluice gate on the coefficient of discharge for free gate flow conditions. Both sill shape and sill height are studied. Shapes tested include both polygonal and non polygonal sills.
Abdualaziz A. Alhamid
doaj +1 more source
Discharge coefficient of combined rectangular-triangular weirs using soft computing models [PDF]
Journal of Hydraulic Structures, 2023 This study investigates the potential of Adaptive Neuro-fuzzy inference system (ANFIS), M5P, and Gaussian Process regression (GP) approaches to predict discharge coefficient (Cd) of chimney weir with different apex angles.
Hamidreza Abbaszadeh +4 more
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Experimental and numerical analysis of flow over a rectangular full-width sharp-crested weir
Water Science and Engineering, 2018 Weirs are a type of hydraulic structure, used for water level adjustment, flow measurement, and diversion of water in irrigation systems. In this study, experiments were conducted on sharp-crested weirs under free-flow conditions and an optimization ...
Ghorban Mahtabi, Hadi Arvanaghi
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Pyramidal vortex breakers influences on the flow discharge of morning glory spillway
Ain Shams Engineering Journal, 2020 Vortex is the basic obstacle envisaged in the morning glory spillways that can lead to the reduction of spillway efficiency due to decreasing the discharge coefficient.
Farzaneh Sayadzadeh +3 more
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Emitter discharge variability of subsurface drip irrigation in uniform soils: effect on water-application uniformity [PDF]
, 2008 Emitter discharge of subsurface drip irrigation (SDI) decreases as a result of the overpressure in the soil water at the discharge orifice. In this paper, the variation in dripper discharge in SDI laterals is studied.
Gil Rodríguez, María +4 more
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Effect of Channel Slope on Discharge Coefficient of Cylindrical Crested Weirs [PDF]
Engineering and Technology Journal, 2013 This research paper investigates the effect of the longitudinal channel slope on the discharge coefficient of cylindrical weirs. The methodology applied is by adopting three different diameters of the cylindrical weir and at three different slopes of the
Mohammed Tareq Khaleel
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Determination of discharge coefficient in the tilted crown sharp-crested weirs [PDF]
Journal of Applied Research in Water and Wastewater, 2022 In this study, the performance of vertical and tilted crown weirs with different angles of the weir crest across the flow has been investigated using numerical and experimental models.
Salma Ajeel Fenjan +2 more
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Optimal waste stream discharge temperature selection for dryer operations using thermo-economic assessment [PDF]
, 2012 A typical drying process that has liquid and gas discharge streams has been analysed and the impact of selecting various combinations of soft temperatures on heat recovery, utility targets, area targets, capital cost and total cost is reported.
Atkins, Martin John +4 more
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Discharge coefficient of a rectangular sharp-edged broad-crested weir
Journal of Hydrology and Hydromechanics, 2014 This paper is concerned with the determination of the relationship for the calculation of the discharge coefficient at free overflow over a rectangular sharp-edged broad-crested weir without lateral contraction. The determination was made on the basis of
Zachoval Zbyněk +4 more
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