Determination of Natural Flow Rates of Some Chickpea Varieties on Different Surfaces and Surface Angles
Abstract
In this study, some physical properties of Gökçe chickpea (registered variety) and Spanish chickpea (local population) variety cultivated in Konya Province were determined. Flow rates of chickpea varieties were detected at four different conveyor channel angles (24°, 28°, 32° and 36°) and on three different surfaces (galvanized sheet, painted sheet and steel sheet surfaces). Length, width, thickness, geometric mean diameter, sphericity, repose angle, thousand grain weight, bulk density values of Gökçe chickpeas at 8.90% moisture level are 10.09 mm, 7.34 mm, 7.74 mm and 8.30 mm, 0.82, 18.04°, 364.6 g and 746.82 kg m-3 and for Spanish variety at 10.40% moisture level are 12.16 mm, 8.22 mm, 9.01 mm, 9.65 mm, 0.79, 16.01°, 481.96 g, 690.21 kg m-3 were determined respectively. These varieties, the static friction coefficient values on galvanized sheet, painted sheet and steel sheet surfaces were found to be 0.335 and 0.351, 0.401 and 0.445, 0.388 and 0.435, respectively. Flow rates increased as the channel conveyor angle increased on galvanized sheet, painted sheet and steel sheet surfaces. The increase rates for Gökçe and Spanish chickpeas on these surfaces were 207% and 189%, 630% and 522%, 291% and 202%, respectively. When the surface averages are taken into account, average flow rates of 1.69 kg s-1 on the galvanized sheet surface, 1.24 kg s-1 on the painted sheet surface and 1.54 kg s-1 on the steel sheet surface were obtained and found to be statistically significant. The difference between the surfaces is due to the roughness values of the surfaces. The lowest average roughness value was found on the galvanized sheet surface (1.13 µm), and the highest on the painted surface (2.06 µm). According to the triple interaction results, the highest flow rate value was obtained on the galvanized sheet surface and the conveyor angle of 36° in both chickpea varieties, and the lowest flow values were obtained at the conveyor angle of 24° on the painted sheet surface.
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DOI: https://doi.org/10.15316/SJAFS.2021.255
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