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Optimal design of Nautilus-based dual-usage turbine
CADFEM CIS, CJSC

Optimal design of Nautilus-based dual-usage turbine

The original aerodynamic design of a non-cavitating marine turbine exhibited performance-degrading cavitation in the hub region at high rotation rate. Using a numerical optimization approach, the cavitation was fully eliminated by updating the local geometry of turbine helical blades. Computational outputs were obtained using a combination of ANSYS SpaceClaim, ANSYS CFX and Fluent, ANSYS Simplorer and ANSYS optiSLang software working in the ANSYS Workbench 'end-to-end' environment.