6533b7d5fe1ef96bd12651fb

RESEARCH PRODUCT

Experimental study on triangular central baffle flume

Mohammad BijankhanVito Ferro

subject

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 ratioMathematics

description

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 higher than that of a typical central baffle flume. Experimental observations show that the contraction ratio is a key parameter to distinguish between free and submerged flow regimes through a TCBF. Finally, to identify the flow condition, submergence threshold condition was formulated.

yearjournalcountryeditionlanguage
2019-12-01Flow Measurement and Instrumentation
https://doi.org/10.1016/j.flowmeasinst.2019.101641