Open AccessDeveloping a mathematical model and a computer program for a preliminary design of a transonic axial compressor
Author(s) -
A. I. Borovkov,
Yu. B. Galerkin,
O.A. Solovieva,
А. А. Дроздов,
A. F. Rekstin,
V. B. Semenovsky,
P. N. Brodnev
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1891/1/012019
Subject(s) - impeller , gas compressor , axial compressor , transonic , mechanics , flow (mathematics) , flow coefficient , lag , limiting , angle of incidence (optics) , engineering , mechanical engineering , physics , computer science , aerodynamics , optics , computer network
This paper presents a mathematical model underlying the program for calculating and designing axial compressors. The process of calculating pressure loss in the elements of the axial compressor’s stage flow path is described. The loss coefficient consists of losses on the limiting surfaces, secondary losses and profile losses. The effect of roughness on the pressure loss is taken into account by introducing the corresponding empirical coefficient. An algorithm for calculating the blades’ and vanes’ angles of the impeller and the guide apparatus is presented by calculating the incidence angle and the lag angle of the flow. The flow lag angle is the sum of the lag angle of the flow on the profile and the lag angle due to viscous flow on the limiting surfaces.