AN OBJECT-ORIENTED CFD CODE FOR OPTIMIZATION OF HIGH PRESSURE RATIO COMPRESSORS

The flow fields and performances of different transonic radial compressors of varying geometries and conceptual desi gns have been studied numerically. All the simulations were per formed with a modified in-house 3D RANS solver based on an object-oriented open-source library. The solver uses an Al lMach algorithm with a special treatment for the pressure cor rector equation to deal with highly compressible flows. The 3 D flow field structures, the characteristics and integral quantities have been compared to the results of established, state-of- the-art commercial solvers as well as to measurements whenever poss ible. This paper demonstrates for various configurations tha t the main flow features and the flow characteristics have been captured by the new solver. Furthermore, the new solver is also c apable of computing the delta variations of similar designs.This is an essential step for the broad application of the new solv er for optimization design cycles.

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