MODELING THE FLOW PART OF THE COMPRESSOR CASE USING METHOD OF DISCRETE INTERPOLATION

Abstract

Nowadays, turbochargers are widely used. They find their application in most enterprises, especially in industrial complexes. Therefore, the optimization of all technical and economic indicators of turbochargers is a very important factor. The power of a turbocharger is influenced by such factors as: the geometry and number of turbine impeller blades, the size and shape of the turbine channel, the shape of the compressor rotor blades, and the geometry of the inlet and outlet channels of the compressor casing. The aerodynamic characteristics of the channels are mainly determined by the shape of the flow path of the turbocharger housing. The development of the optimal design of this part of the system affectson the power of the entire mechanism and reduction of energy losses in the channel. The problem of modeling the flow path of the turbocharger housing can be conditionally divided into two interrelated tasks: modeling the center line; distribution of the airfoil along this line. The main element connecting all the parameters of the channels of the surface of the turbocharger housing is the center line. And the task is to achieve a smooth change in the curvature of this curve, since this affects the decrease in the internal energy losses of the gas medium flow in the channel. An essential role in the model is also played by the graph of changes in the section planes along the channel axis. The plot of planes is a flat curve that characterizes the law of variation of the planes of cross sections along the accepted channel distance. Observing the plane graph allows you to smoothly increase or decrease cross-sectional areas along the axis. In the process of constructing the channel model, the shape and position of the channel cross-sections are determined based on the graph of the planes and the shape of the inlet and outlet sections of the channel. As a result of the research carried out, the paper proposes software for modeling the flow path of the compressor casing, based on research carried out in the framework of variable discrete geometric modeling. SolidWorks was chosen as an environment for displaying and testing, C # was chosen as the programming language for development, as one of the best options for developing applications that work with the SolidWorks API. Testing the developed model for aerodynamic performance in the Flow Simulation module of the SolidWorks environment confirmed the effectiveness of the actions performed.

Keywords - SolidWorks, C #, COM objects, API, computational algorithm.