Search results for "stage-discharge formula"

showing 3 items of 3 documents

Experimental Modeling of Submerged Pivot Weir

2020

An inclined rectangular overflow structure, also called a pivot weir, consists of a rectangular plate, angled downstream from the vertical, that can be used as an upstream water level control device. A pivot weir is submerged when the upstream water level is influenced by the downstream flow depth. In this paper, to investigate factors influencing submerged flow conditions, an extensive experimental program including 251 experimental trials was carried out using weir inclination angles of 39.6°, 53°, 85°, and 90° and weir heights ranging from 0.263 to 0.312 m. A formula to distinguish between free and submerged flow conditions was developed using the Π theorem of dimensional analysis and th…

HydrologyDownstream (manufacturing)WeirSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliUpstream (networking)Dimensional analysis Incomplete self-similarity Overflow gate Stage-discharge formula Submerged flow condition Threshold condition Wavy flow conditionAgricultural and Biological Sciences (miscellaneous)GeologyWater Science and TechnologyCivil and Structural EngineeringWater level
researchProduct

Experimental study on triangular central baffle flume

2019

Abstract In this paper the results of the experiments performed to study the flow through a Triangular Central Baffle Flume (TCBF) are reported. The investigated flume consists of a triangular baffle of the apex angle of 75° with a given base width. The theoretical stage-discharge formula was deduced by applying the Buckingham's Theorem and incomplete self-similarity hypothesis and was calibrated using the laboratory measurements carried out in this investigation. The proposed stage-discharge formula is characterized by a mean absolute relative error of 7.4% and 72% of the data points are in an error range of ±5%. The results indicate that TCBF flume is characterized by a flow capacity high…

Mean absolute relative errorFlow (psychology)0207 environmental engineeringStage-discharge formulaBaffle02 engineering and technologyMechanicsSubmergence threshold01 natural sciencesComputer Science Applications010309 opticsFlumeTriangular central baffle flumeModeling and Simulation0103 physical sciencesRange (statistics)Flow capacitySettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliBuckingham theoremElectrical and Electronic EngineeringIncomplete self-similarity020701 environmental engineeringInstrumentationContraction ratioMathematicsFlow Measurement and Instrumentation
researchProduct

Portable central baffle flume

2022

This paper investigated the hydraulic characteristics of the triangular central baffle (TCB) flume. Laboratory tests were carried out to determine the flume dimensions. The field applicability of the proposed portable device was examined by on-farm installation. According to the laboratory tests, when the contraction ratio, r, was less than 0.39, the flow capacity was not affected by the ratio between the flume’s floor height and the throat width. The laboratory analysis also showed that there was no significant effect of installing an entrance ramp on the stage-discharge relationship for r<0.39, while the entrance ramp increased the discharge capacity for r>0.39. The stage-discharge …

Triangular central baffle flumeMechanical Engineeringsubmergence threshold. n-coSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliBioengineeringincomplete self-similaritystage-discharge formulaIndustrial and Manufacturing EngineeringBuckingham’s theorem
researchProduct