FLOW CHARACTERISTICS OF RICE GRAINS IN GRAVITY PIPES

Soliman, S. N.; Yehia, M. O.; Khatab, A. R.; Zhran, R. A.

doi:10.21608/mjae.2017.97445

FLOW CHARACTERISTICS OF RICE GRAINS IN GRAVITY PIPES

Document Type : Original Article

Authors

¹ Prof., Ag. Eng. Dept., Fac. of Ag. Alexandria Univ., Egypt.

² Rice Technology Training Center, Field Crops Res. Inst., A.R.C., Alexandria, Egypt.

³ Dept. of Ag. Eng., Fac. of Ag., Alexandria Univ., Egypt

10.21608/mjae.2017.97445

Abstract

To study the parameters affecting the fluidity of rice by gravity pipe system in order to improve the design of the gravity pipes in an effective and economical way. Two paddy rice Sakha 103 as a short variety, and Jasmine local aromatic as a long variety was selected for this study. The rice samples were prepared for gravity flow experiments by mechanically cleaned. The fresh and clean paddy samples were naturally drying until 14 (M.C.w.b. %).Physical characteristic tests of paddy rice grains and its products (brown and white), were conducted including grains dimensions, aspect ratio, grains volume, surface area, equivalent diameter, sphericity, weight of 1000 grains, bulk density, particle density, porosity, grain hardness, angle of repose and static coefficient of friction on galvanized sheet.Flowability experiments of rice grains were conducted in three main groups, first throughout orifice, second through orifice and elbows and third throughout orifice, elbows and pipe.

Keywords

Main Subjects

Processing Engineering of Agricultural Products

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