Abstract
In practice, the creation of compressor units is impossible without a large amount of experimental work. A lot of money is being invested in solving this problem, and many people participate in testing. Almost all calculation methods that are used in design are experimental and theoretical. In this regard, the modernization of calculation methods is inextricably linked with the development of experimental research, improvement of means and methods of measurements. In this paper, the created miniature experimental stand of a two-stage axial compressor is described, the general scheme of the stand is shown, the systems are described in detail. Several experiments were carried out at different speeds of rotation with different loads, the results were analyzed. Methods for obtaining characteristics of axial compressors using a software package for numerical three-dimensional thermodynamics modeling are presented. The described compressor unit has a set of sensors for collecting flow parameters in different planes. The signals from the sensors are processed by an eight-bit microcontroller. The stand is made of plastic using fused deposition modeling (FDM) on a 3D printer. Preliminary calculations of the strength of the rotor structure elements were carried out, the materials recommended for the manufacture of the installation were determined. The stand is proposed to be used for the design and optimization of two-stage compressor, as well as in the educational process. Also, in this article describes a constructed numerical model for studying the flow parameters of a compressor, presents the results of comparing some experimental and calculated data, constructs a flow characteristic, estimates the measurement uncertainty, and formulates several recommendations.
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