In this paper, the outflow process of a linear width contraction device for a free-flow condition is modeled using the dimensional analysis and the incomplete self-similarity condition. The proposed theoretical stage-discharge relationship is tested using measurements available in the literature. The proposed power stage-discharge equation is characterized by a value of the exponent close to 2 and a coefficient depending on the angle of the device sides with the channel bank. The proposed flume is characterized by simple construction, easy installation, low cost, and a good accuracy of the measured discharge (errors in the estimate ranging from - 3.84 to 1.9%). The deduced stage-discharge equation is characterized by errors in the estimate of discharge lower than or equal to & PLUSMN; 3% for 93.7% of the investigated cases. The main result of this paper is a stage-discharge relationship giving an accurate estimate of discharge but, at the same time, having the advantage of working regardless of the discharge coefficient estimate.

Nicosia A., Di Stefano C., Palmeri V., Serio M.A., Ferro V. (2023). Flow discharge measurement by a linear width contraction device. IRRIGATION SCIENCE [10.1007/s00271-023-00873-8].

Flow discharge measurement by a linear width contraction device

Nicosia A.
Membro del Collaboration Group
;
Di Stefano C.
Membro del Collaboration Group
;
Palmeri V.
Membro del Collaboration Group
;
Serio M. A.
Membro del Collaboration Group
;
Ferro V.
Membro del Collaboration Group
2023-06-01

Abstract

In this paper, the outflow process of a linear width contraction device for a free-flow condition is modeled using the dimensional analysis and the incomplete self-similarity condition. The proposed theoretical stage-discharge relationship is tested using measurements available in the literature. The proposed power stage-discharge equation is characterized by a value of the exponent close to 2 and a coefficient depending on the angle of the device sides with the channel bank. The proposed flume is characterized by simple construction, easy installation, low cost, and a good accuracy of the measured discharge (errors in the estimate ranging from - 3.84 to 1.9%). The deduced stage-discharge equation is characterized by errors in the estimate of discharge lower than or equal to & PLUSMN; 3% for 93.7% of the investigated cases. The main result of this paper is a stage-discharge relationship giving an accurate estimate of discharge but, at the same time, having the advantage of working regardless of the discharge coefficient estimate.
giu-2023
Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
Nicosia A., Di Stefano C., Palmeri V., Serio M.A., Ferro V. (2023). Flow discharge measurement by a linear width contraction device. IRRIGATION SCIENCE [10.1007/s00271-023-00873-8].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/606874
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