Development of an automatic design and analysis tool for axial compressors

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2017
Kündeş, Necmettin Anıl
In this thesis, an automatic design and analysis tool is developed for the design of an axial flow compressor and to check the required design conditions of the designed compressor by using three dimensional CFD analyses automatically. The developed tool mainly consists of six parts which are mean line design, calculations based on radial equilibrium theory, parametrization, generation of three dimensional blade geometry, mesh generation and solver. A new design study for an axial flow compressor begins with mean line design part in the developed tool. Mean line design part comprises of one dimensional analyses and all the calculations are carried out on mean lines of the blades. Blade and flow properties along the blade span are calculated by using the result of mean line design code and the developed code which is based on radial equilibrium theory. Two dimensional blade cross sections are generated by parametrization part of the developed tool. These cross sections are defined with nurbs which are obtained by using blade angles, blade chord lengths and blade thickness distributions. Three dimensional blade cross sections are obtained by mapping of these two dimensional blade cross sections on the corresponding stream surfaces. Three dimensional blade geometry is generated by stacking up these three dimensional blade cross sections. Mesh is generated automatically around the three dimensional blade geometry by developed multiblock structured mesh generator. Three dimensional CFD analyses are performed by using in-house developed solver to obtain complete performance map of new designed compressor after the automatic mesh generation and this map is used to assess the success of the design. 

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Citation Formats
N. A. Kündeş, “Development of an automatic design and analysis tool for axial compressors,” M.S. - Master of Science, Middle East Technical University, 2017.