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Secondary kinetic energy is commonly used across literature to quantify of the strength of secondary flows, and can be used to predict pressure loss and therefore loss in efficiency of a turbine. Despite its ubiquity, the definition various between sources. This study directly examines multiple common approaches, as well as two new methods more suitable for a rotating environment, to define the primary flow direction from which the secondary flows are derived and compares different possible interpretations of the flow field.

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This page is a summary of: A Comparison of Secondary Kinetic Energy Definitions Using Time-Resolved Flow Field Measurements in a Turbine, January 2025, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2025-1830.
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