Method for Calculating Instantaneous Sprinkler Strength

A method for calculating instantaneous sprinkling intensity, comprising the following steps:

• (a) placing rain gauges in number of b with water-receiving opening in diameter D at a distance of a meters from a translational sprinkler, to measure the volume of water sprinkled from the translational sprinkler;
• (b) setting an operating pressure of the translational sprinkler, maintaining the translational sprinkler in a stable operating state, setting a movement speed s of the translational sprinkler, moving the translational sprinkler till the rain gauges cannot receive water sprinkled from the translational sprinkler, and then stopping the translational sprinkler;
• measuring the volume of sprinkled water ci (i=1, . . . , b) received in each rain gauge, repeating the test for n times at the same movement speed, and calculating the average volume of sprinkled water di=ci/n (i=1, . . . , b) received in each rain gauge;
• (c) calculating the movement time t=2R/s during which the volume of water sprinkled from the translational sprinkler is received in the rain gauges;
• calculating the average volume of sprinkled water V=Σi=1bdi/b received in the rain gauges;
• calculating the average depth V=Σi=1bdi/b of sprinkled water received in the rain gauges;
• (d) assuming a distribution shape of the volume of water sprinkled from the translational sprinkler, and establishing a functional relationship ht=kf(t) between instantaneous sprinkling intensity ht and the movement time t according to the mathematical characteristics of the assumed shape, where, k is a general term of all variables in the analytic expression f(t), and f(t) is an analytic expression of the independent variable t;
• calculating the variable kin the functional relationship ht=kf(t) from the value of the movement time t and the value of the average depth H of sprinkled water which are calculated in the step (c), according to the mathematical characteristics of the assumed shape;
• and
• (e) substituting the specific numerical value of instantaneous movement time t of the translational sprinkler into the functional relationship ht=kf(t) established in the step (d) to obtain the value of ht, which is the numerical value of the instantaneous sprinkling intensity of the translational sprinkler.