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Full-Text Articles in Forest Sciences
Development Of A Mathematical Model Using Dimensional Analysis For Predicting The Friction Losses In Drip Irrigation Laterals With Cylindrical Type In-Line Emitters, Vedat Demi̇r, Hüseyi̇n Yürdem, Adnan Deği̇rmenci̇oğlu
Development Of A Mathematical Model Using Dimensional Analysis For Predicting The Friction Losses In Drip Irrigation Laterals With Cylindrical Type In-Line Emitters, Vedat Demi̇r, Hüseyi̇n Yürdem, Adnan Deği̇rmenci̇oğlu
Turkish Journal of Agriculture and Forestry
This paper presents a prediction model developed using dimensional analysis for friction losses in drip irrigation laterals. Drip irrigation laterals with cylindrical type in-line emitters placed at different spacings ranging from 0.2 to 1 m were considered. The parameters affecting the variation in friction losses in laterals were defined as dimensionless terms using Buckingham's pi theorem. In order to develop a model, experimental friction loss data from 14 different drip irrigation pipes, and some domestic and some imported ones with the above-mentioned spacings were used. The model developed in this study accounted for 98.7% of the variation in the data. …
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Turkish Journal of Agriculture and Forestry
Trickle irrigation systems' efficiency depends on system uniformity, which is determined by water discharge uniformity from emitters. It is impossible to produce 2 identical emitters due to manufacturing variations. The manufacturer's coefficient of variance is used as a measure of discharge variations of emitters. In this study, manufacturers' reported discharge rates and coefficients of manufacturing variation (CVm) values were compared with test results for various types of in-line emitters manufactured by 4 different companies in Turkey. A total of 9 drip irrigation lines, comprising 7 non-compensating and 2 compensating emitters, were tested at 50, 100, 150, 200 and 250 kPa …