Aeromechanical Optimization Of Scalloping In Mixed Flow Turbines

Matthew Elliott*, Stephen Spence, Martin Seiler, Marco Geron

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A detailed loss audit was carried out to identify key loss generating flow structures, and to understand how changes in geometry affected the formation and development of these flow structures throughout the passage. A large vortex which entered the passage from the scalloped region and interacted with the tip leakage vortex along the suction surface of the blade was identified as the main source of loss due to scalloping. The optimized design was found to better control the location of entry of this vortex into the blade passage, thus reducing the associated loss, and facilitating a performance improvement. Geometric design guidelines were then proposed based on these findings.
Original languageEnglish
Title of host publicationTurbo Expo 2021
Number of pages12
Publication statusAccepted - 10 Mar 2021

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