The aim of research is mathematical simulation of work of irrigation systems hydraulic regulator elements with flexible working elements performed with SolidWorks software package in the Simulation module for necessary and sufficient hydraulic studies implementation and obtaining all required data for the design. Research is based on the numerical solution of unsteady Navier – Stokes equations, selected into computational fluid dynamics (CFD – Computational fluid dynamic). The solution of the given task is carried out by investigation of dependences of armored band deflection on hydraulic pressure exerted on it. Based on the results of research conducted stress analyses in three experiments of numerical modeling aimed to justify the possibility of using non-stationary Navier – Stokes equations in determining the parameters of hydraulic regulators in the system of automatic design were done. The 3D model was created by software package SolidWorks, and curves were constructed. According to them the tension practically in any point of flexible operating element can be determined. One can state that the greatest tension occurs in spots of local reinforcement throughout the length and area. Depending on the type of material involved in the calculation, each of them was given related features. According to studies it was revealed that the red areas are located in places of maximum displacement, where water bends the band under the action of hydraulic pressure the most. In places of reinforcement the displacements are minimal, which indicates its efficiency and viability. Also the received results reveal the connection of tension in flexible working elements and their displacement on the load.
Keywords: irrigation system, hydraulic water flow regulator, reliability, simulation, flexible working element.
