A SIMPLE MODEL TO ESTIMATE WETTED SOIL VOLUME FROM THE TRICKLE BY USE OF THE DIMENSIONAL ANALYSIS TECHNIQUE
In efficient utilization of irrigation water resources, it is very important to determine dimension diameter (d) and depth (z) of wetted soil (wetting onion) at different times from commencement of irrigation (t). In this research, by utilization of physical factors effective in volume of wetted soil under point feeding source and by use of the Buckingham ∏ theorem and dimensional analysis, some dimensionless numbers were defined. Then the relations obtained by dimensional analysis were compared with laboratory data collected from a physical model. At last, a number of scientific-experimental equations were obtained that showed a good agreement with the experimental results. This indicates that the derived empirical functions could be used properly for designing drip irrigation system.
water resource dimensional analysis Buckingham ∏ theorem wetting soil volume
Farhad Mirzaei Mojtaba Hatami Fatemeh Mousazadeh
Faulty of water and soil Eng. University of Tehran,Karaj, Iran Water engineering Dept, Mazanderan University, Iran Ab&Khak consulting Engineering
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
345-352
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）