2018
DOI: 10.24200/sci.2018.20209
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On the measurement of transverse shear stress on a rectangular open channel using optimal Preston tube

Abstract: The laboratory studies have been carried out in this research. After determining the sensitivity analysis of the Preston tube diameter in shear stress, four Preston tubes with external diameters of 3.2, 3.9, 4.7, and 6.3 mm were used. The aspect ratios of 2.86 to 13.95 were examined. For measuring the pressure di erence of the Preston tube, a 200 millibar di erential pressure transducer with 0.01 accuracy of the original scale was used. Laboratory results demonstrated that Preston tubes with a diameter of 3.9 … Show more

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Cited by 2 publications
(8 citation statements)
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“…Information on the SSD has been collected in the Lashkar-Ara and Fatahi [8] experiments of a smooth rectangular channel, performed in a flume 10-meter long, 60 cm wide and 70 cm high. All measurements were performed in the range of 11.06 to 102.38 liter per second flow rate.…”
Section: Data Collectionmentioning
confidence: 99%
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“…Information on the SSD has been collected in the Lashkar-Ara and Fatahi [8] experiments of a smooth rectangular channel, performed in a flume 10-meter long, 60 cm wide and 70 cm high. All measurements were performed in the range of 11.06 to 102.38 liter per second flow rate.…”
Section: Data Collectionmentioning
confidence: 99%
“…The results of the best GP models and Tsallis entropy in shear stress prediction are compared with the experimental results of Lashkar-Ara and Fatahi [8] in this section. Figures 7 and 8 show the experimental results as well as SSD predictions with different models in a smooth rectangular channel for B/H equal to 2.85, 4.51, 7.14, 13.95.…”
Section: Comparison Of the Gp Model Tsallis Entropy And Anfismentioning
confidence: 99%
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“…They examined a wide range of flow depths for each level benching and therefore it had been possible to determine the extent to which the hydraulics changes Park et al [7] utilized laboratory-scale water flume and measured the bed shear stress under high-velocity flow conditions directly. Lashkar-Ara and Fatahi [8] measured transverse SSD in the channel bed and wall by using an optimal diameter Preston tube to evaluate the SSD on a rectangular open channel. The outcome of this research is two-dimensional relationships to evaluate local shear stress in both bed and wall.…”
Section: Introductionmentioning
confidence: 99%