TURBINE CASCADE OPTIMIZATION AGAINST SOLID PARTICLE EROSION AND DEPOSITION �ON BLADES
Abstract
PRESENT TECHNOLOGY TURBINE CASCADES ARE OPTIMIZED FOR MAXIMUM AERODYNAMIC PERFORMANCE. THE FUTURE USE OF COAL NECCESSITATES THE PROTECTION OF THE TURBINE FROM SOLID FLY-ASH PARTICLE EROSION AND DEPOSITION. THE THESIS PRESENTS ANOPTIMIZATION METHOD FOR MINIMUM DEPOSITION OF PARTICLES IN THE SIZE RANGE 0,1 - 1 ΜM, WHILE THE TOTAL PRESSURE LOSSES ARE KEPT TO ACCEPTABLE LEVELS. DEPOSITION MAY BE REDUCED BY 40% WITH LOSSES INCREASED BY 50% FROM THEIR NOMINAL VALUE.
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