TY  - SER
AU  - Hanafy,M.
AU  - El-Berry,A.M.
AU  - Abu-Habsa,A.R.
AU  - Bishara,B.L.
TI  - A simple model for designing microirrigation lateral with the microtube as an emission point
KW  - Microirrigation
KW  - Design
KW  - Computer programs
KW  - Microtubules
KW  - Pipes
N1  - Includes references
N2  - Studies were conducted to evaluate the friction factor in polyethylene pipes applying Darcy-Weisbach equation. Results of the investigation have been used to apply modeling techniques to form a simple model for designing single microirrigation lateral with the microtube as an emission device that was simulated the uniformity coefficient of water application. The experimental investigation showed that the average friction factor, relative roughness and absolute roughness values were found 0.039081, 0.0063 and 0.084 mm respectively for polyethylene pipe size 13.35 mm I. D., the average friction factor, relative roughness and absolute roughness values were found 0.039074, 0.0073 and 0.118 mm for polyethylene pipe size 16.15 mm I. D. and the average friction factor, relative roughness and absolute roughness values were found 0.037328, 0.005 and 0.09 mm for polyethylene pipe size 18.2 mm I. D. A computer model was applied for designing single microirrigation lateral with the microtube as an emission device using the experimental data that was simulated the uniformity coefficient of water application
UR  - http://nile.enal.sci.eg/EALE/2006/MJAE/2306/1/96.pdf
ER  -