Program Design Of The Micro-irrigation Waterpower Analytical Based On MATLAB And The Practical Engineering

The micro-irrigation, a brace of the technology of water saving in agriculture, has many strong points, such as timely and adequate irrigation water supply, water and energy saving. It is an effective measure of water-saving irrigation. In this paper, the micro-irrigation waterpower was analyzed and studied. A comparatively universal program was developed based on MATLAB, a computer language used mainly in science and engineering. And the pipeline of micro-irrigation was analyzed by this program, which was a useful way to compute waterpower of pipeline and design the micro-irrigation system.In this paper , base on the capillary waterpower formulae, The application shooting method, golden partition method and step-back method were utilized to analytical waterpower of micro-irrigation system.By analyzing the best nonlinear station position of the uniform grade single scroll bidirectional capillary tube, the difference was existed between the minimum pressure of the uphill capillary and the minimum pressure of the downhill capillary under the most conditions.By testifying the confirmation the flux formula of capillary, it was obvious that the effect of polynomial form was better than the effect of exponential form. If the pressure scope was selected suitably, both the most greatly relative errors were below 1% and the two fitting methods are feasible.By analyzing the best nonlinear station position of the uniform grade nonlinear unit, nonlinear unit must be considered as a whole. Otherwise the best nonlinear station position searched was only an approximate value and sometimes can leave the accurate position very far.For the irregular land parcel met in projects, the corresponding Micro-irrigation water power program and irrigation with small tubes waterpower program were established. Both of the programs mentioned above were applied to the designation of the Micro-irrigation actual project. Thus, the engineering design personnel's design calculation quantity was greatly reduced and the important value of practical project was achieved.