K Vamsi, MV Ramana, K Madhusudhan Reddy, B Ramana Murthy and G Krishna Reddy
The relationships viz., pressure v/s radius of throw, pressure v/s discharge and were developed for standalone rain gun at different riser heights. The linear, logarithmic, power and exponential compound, inverse, growth and logistic types of equations were fitted for these relationships. The best relationships were selected based on the value of regression coefficient. The discharge of raingun increases with operating pressure. This fact indicates the scope for deciding the operating pressure to obtain the desired precipitation rate according to the soil type. However the nature of variation of discharge and radius of throw with operating pressure were different for different makes of raingun. Similarly the radius of throw of raingun was found to be increased with operating pressure.
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