| Resumo : |
An axial turbomachinery is sized based on preliminary 1D techniques, after 2D for the geometric construction of the machine and for both the use of losses models are fundamental. The loss models are used to quantify the effects of viscous friction in the flow throughout the engine. With the preliminary study and the geometry of the turbomachinery, it is possible to calculate the 3D flow using Computational Fluid Dynamics tools (CFD). Therefore, it is necessary to discretize the calculation domain generating a computational mesh with numerous control volumes, where will be calculated the equations Conservation of Mass, Momentum and Energy Conservation. In this work, the results will be compared based on the 3D flow calculation, using the CFD technique, with the results of the design tool based in streamline curvature, with use of models of losses based on semi-empirical correlations. The comparison of the results will be made to the operation point of the design of a 5-stage axial compressor for use in aviation gas turbines. |