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HAJIAHMADI AMIN, KHANJANI MOHAMMAD J., SANEIE MOJTABA, MOGHADDAM MEHDI AZHDARI. 2016. Laboratory Investigation of the Eff ect of the Size of Orifi ce on the Performance of Curvature Submerge Vanes for Sediment Leaching of the Vortex Settling Basin’s Floor. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(3): 781–789. In this paper, considering the accumulation of the sediments on the fl oor of the vortex settling basin during sediment extracting, curvature submerge vanes were used on the fl oor of the vortex basin and the eff ect of the size of the orifi ce was studied on the performance of the curvature submerge vanes for sediment leaching of the fl oor of the basin. Experiments were performed on a physical model with a height of 90 cm and a diameter of 206 cm and a fl oor slope of 10% and also three ori fi ces were used with diameters of 59, 46 and 36 mm. The submerge vanes were placed in di ff erent arrangements and diff erent radial sections. The results of the experiments indicated that the performance of the vanes in sediment extracting on the fl oor is primarily infl uenced by the orifi ce and secondly by the arrangements and radial sections of the vanes’ placements.

acta universitatis agriculturae et silviculturae mendelianae brunensis

Laboratory Investigation of the Effect of the Size of Orifice on the Performance of Curvature Submerge Vanes for Sediment Leaching of the Vortex Settling Basin's Floor