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.

Bijankhan M., & Ferro V. (2019). Experimental study on triangular central baffle flume. FLOW MEASUREMENT AND INSTRUMENTATION, 70, 101641 [10.1016/j.flowmeasinst.2019.101641].

Experimental study on triangular central baffle flume

Ferro V.
Membro del Collaboration Group
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 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.
Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
https://www.journals.elsevier.com/flow-measurement-and-instrumentation
Bijankhan M., & Ferro V. (2019). Experimental study on triangular central baffle flume. FLOW MEASUREMENT AND INSTRUMENTATION, 70, 101641 [10.1016/j.flowmeasinst.2019.101641].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/391401
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