NUMERICAL SIMULATIONS OF TECHNOLOGICAL EFFECTS ENCOUNTERED ON TURBOMACHINERY CONFIGURATIONS WITH THE CHIMERA TECHNIQUE

This paper presents an overview of numerical simulations performed at ONERA on turbomachinery configurations which include technological effects, such as tip clearance, hub disk leakage, casing treatments, blade fillets and cooling holes. An overset grid approach (Chimera technique) is used to simulate these geometrical effects with ONERA’s structured CFD solver elsA. Calculations performed on the different configurations enable to quantify the impact of these technological effects on the flow solution.

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