Analysis of the predictive capability of numerical configurations of 3D CFD axial compressor models

Abstract

[ES] Este documento describe la investigación del flujo de un compresor axial a través de una simulación CFD. El objetivo es evaluar la capacidad predictiva sobre los valores obtenidos experimentalmente en las simulaciones de las geometrías utilizadas, para confirmar que las distintas configuraciones pueden considerarse como validadas. En particular, se aplicarán distintas estrategias de mallado.

[EN] This document details the validation process of the CFD calculations performed on the NASA rotor 37 geometry in comparison to the experimental results conducted in 1997 by Suder [1]. The work begins with a brief theoretical introduction about the operation of an axial compressor, followed by the description of the geometry and the results obtained in Suder’s experiments. The next section corresponds to the description of the configuration used for the CFD calculations, including the description of the different grids used. Subsequently, the results obtained from the CFD calculations are compared with the experimental results, analyzing the strategies that are closest to the previously obtained ones. On the other hand, the influence of the tip clearance is analyzed as a relevant factor in the CFD simulation. Finally, the conclusions identify the strategy that best approximates the reality observed in Suder’s experiments; however, this work serves as a starting point for studying the same geometry under various conditions, as it is based on a validated point with real results.