Abstract
| Lingua originale | English |
|---|---|
| pagine (da-a) | 04018012- |
| Numero di pagine | 8 |
| Rivista | JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING |
| Volume | 144 |
| Stato di pubblicazione | Published - 2018 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Agricultural and Biological Sciences (miscellaneous)
- Water Science and Technology
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Experimental study and numerical simulation of inclined rectangular weirs. / Ferro, Vito; Bijankhan, Mohammad.
In: JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, Vol. 144, 2018, pag. 04018012-.Risultato della ricerca: Article
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TY - JOUR
T1 - Experimental study and numerical simulation of inclined rectangular weirs
AU - Ferro, Vito
AU - Bijankhan, Mohammad
PY - 2018
Y1 - 2018
N2 - Inclined rectangular weirs, also named pivot weirs, are used both to adjust the upstream water level and to increase the flow capacity compared with that of normal rectangular weirs. However, the experimental studies available in the literature present contradictory conclusions for the inclined weir discharge capacity. In this paper, new experimental runs and numerical simulations were performed to investigate the effect of the rectangular weir inclination angle on the stage-discharge formula. The experiments were carried out using inclination angles ranging from 30° to 90°. Buckingham's theorem of dimensional analysis was used to obtain an equation for the flow magnification ratio (the discharge through the pivot weir divided by the corresponding discharge over the vertical weir) as a function of theweir inclination angle. The experimental observations revealed that the flow magnification ratio increases with the inclination angle to a maximum of 1.082 for 30° of inclination. Bidimensional (2D) numerical analysis using theOpenFOAMcomputational fluid dynamic toolbox was also used. The flow magnification ratios obtained numerically confirmed those obtained experimentally.
AB - Inclined rectangular weirs, also named pivot weirs, are used both to adjust the upstream water level and to increase the flow capacity compared with that of normal rectangular weirs. However, the experimental studies available in the literature present contradictory conclusions for the inclined weir discharge capacity. In this paper, new experimental runs and numerical simulations were performed to investigate the effect of the rectangular weir inclination angle on the stage-discharge formula. The experiments were carried out using inclination angles ranging from 30° to 90°. Buckingham's theorem of dimensional analysis was used to obtain an equation for the flow magnification ratio (the discharge through the pivot weir divided by the corresponding discharge over the vertical weir) as a function of theweir inclination angle. The experimental observations revealed that the flow magnification ratio increases with the inclination angle to a maximum of 1.082 for 30° of inclination. Bidimensional (2D) numerical analysis using theOpenFOAMcomputational fluid dynamic toolbox was also used. The flow magnification ratios obtained numerically confirmed those obtained experimentally.
KW - Buckingham analysis; Flow capacity; Inclined rectangular weir; OpenFOAM; Pivot weir; Civil and Structural Engineering; Water Science and Technology; Agricultural and Biological Sciences (miscellaneous)
UR - http://hdl.handle.net/10447/289293
UR - http://ojps.aip.org/iro/
M3 - Article
VL - 144
SP - 04018012-
JO - Journal of Irrigation and Drainage Engineering - ASCE
JF - Journal of Irrigation and Drainage Engineering - ASCE
SN - 0733-9437
ER -