The Effect of Nozzle Geometry on the Flow Characteristics. Mathematic Modeling and Computer Simulation Using Python Programming Language

Nozzle are important elements in mechanical plants. They are used to create fluid flow with different velocity and pressures. The cross section of the nozzle varies in length. The nozzle can be convergent, divergent or combined convergent-divergent. The article deals with the influence of the geometric shape of the nozzle on the parameters of the fluid flow. A mathematical model that describes the fluid parameters during the flow in the nozzle has been modeled. The mathematical model for computer simulations in the Python languageis programmed. Meanwhile, a physical model was built with 3D printer technology. The results of the physical parameters of the fluid were measured in the physical model and were compared with the results of the mathematical simulation. For measuring parameters in the physical model the Labwiev software is used. The results of this comparison will give us the opportunity to simulate with the help of a mathematical model the performance of the nozzle for different geometric shapes of the fluid passage section. Meanwhile, we switched from the conical profile of the diffuser to the bell profile and studied the effects on the flow parameters.