Association Technique Maritime et Aéronautique

Numéro : 2024 - Year : 1987

Unsteady flow computation in transonic turbines and compressors

A.FOURMAUX, Direction de l'Energétique, Office National d'Etudes et de Recherches Aérospatiales, (ONERA)


This paper describes two and three dimensional calculation methods which apply to the flow computation in two blade-rows having different angular speeds. The Euler equations are solved using the classical predictor-corrector Mc Cormack scheme. The programs can be used in many cases involving time-dependent phenomena : mutual influence of two blade-rows, distortion problems, wake passage effects, aeroelasticity. After the programs are described, some computation results are shown and allowone to appreciate the potential of these methods for a detailed unsteady flow analysis.

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