Investigations demonstrate interaction of corner separation and hub leakage flow in cantilevered stators, highlighting the impact of clearance variations.
Key Points
An optimal clearance of 0.5 τ minimizes entropy loss with static end walls.
Hub leakage flow and corner separation achieve dynamic equilibrium at the optimal clearance.
Moving end walls increase entropy loss with larger clearances, disrupting optimal conditions.
The sensitivity of entropy loss to clearance changes significantly at -10° incidence.