Volume 6, Issue 3, September 2020, Page: 89-94
A Novel Viscous Throughflow Model for Compressor Analysis and Its Application
Hailiang Jin, AECC Hunan Aviation Powerplant Research Institute, Hunan Key Laboratory of Turbomachinery on Small and Medium Aero-Engine, Zhuzhou, China
Daobin Qiu, AECC Hunan Aviation Powerplant Research Institute, Hunan Key Laboratory of Turbomachinery on Small and Medium Aero-Engine, Zhuzhou, China
Yueqian Yin, AECC Hunan Aviation Powerplant Research Institute, Hunan Key Laboratory of Turbomachinery on Small and Medium Aero-Engine, Zhuzhou, China
Received: Jul. 12, 2020;       Accepted: Aug. 25, 2020;       Published: Sep. 7, 2020
DOI: 10.11648/j.ijfmts.20200603.13      View  29      Downloads  9
Abstract
Throughflow calculations are still an inevitable step in the aerodynamic design of compressors. The viscous throughflow model derived from Navier-Stokes equations can be more capable in predicting choked flow and capturing shock waves compared to the traditional methods. In this paper, authors further developed the inviscid model for a previously developed throughflow analysis method. To obtain the governing equations, three-dimensional Navier-Stokes equations combined with the Spalart-Allmaras turbulence model were circumferentially averaged with the assumption that the flow was circumferentially uniform. A viscous blade force and an inviscid blade force had been calculated. The Miller's correlations of deviation angle and loss were incorporated to model these forces. The governing equations are discretized by an explicit four-step Runge-Kutta scheme and solved by a time-marching finite volume method. Current model was verified through predicting the performances of a 1.5 stage fan. The agreements between the experiments and calculations are reasonably good. This throughflow model can predict quite similar flow patterns and radial profiles of some parameters compared to a CFD software, which shows the potential of this model. There are still some notable deviations between the results from throughflow analysis and that from CFD calculation. Future work is to improve the prediction of deviation angle and loss near the endwall regions.
Keywords
Throughflow Model, Viscous, Compressor, Analysis, Application
To cite this article
Hailiang Jin, Daobin Qiu, Yueqian Yin, A Novel Viscous Throughflow Model for Compressor Analysis and Its Application, International Journal of Fluid Mechanics & Thermal Sciences. Special Issue: Fluid Mechanics & Thermal Sciences in Turbomachines. Vol. 6, No. 3, 2020, pp. 89-94. doi: 10.11648/j.ijfmts.20200603.13
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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