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 dis- charge capacity for r>0.39. The stage-discharge curve obtained based on the laboratory tests was verified using field data. The results revealed that the proposed portable flume could be used accurately to determine the flow through an unlined ditch. Practical suggestions were proposed to determine the distinguishing condition curve.
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Imam Khomeini Int Univ, Dept Water Sci & Engn, POB 3414916818, Qazvin, IranImam Khomeini Int Univ, Dept Water Sci & Engn, POB 3414916818, Qazvin, Iran
Kolavani, F. Lotfi
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Bijankhan, M.
Di Stefano, C.
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Univ Palermo, Dipartimento Sci Agr & Forestali, Viale Sci, I-90128 Palermo, ItalyImam Khomeini Int Univ, Dept Water Sci & Engn, POB 3414916818, Qazvin, Iran
Di Stefano, C.
Ferro, V.
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Univ Palermo, Dept Earth & Marine Sci, Via Archirafi 20, I-90128 Palermo, ItalyImam Khomeini Int Univ, Dept Water Sci & Engn, POB 3414916818, Qazvin, Iran