Purdue University Graduate School

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Optimization and Analysis of Squealer Tip  Geometries in Supercritical CO2

posted on 2023-06-14, 12:41 authored by Stephen Thomas BeanStephen Thomas Bean


In this thesis, two optimizations of squealer tip geometries are completed for first stage turbine blades for use in a supercritical carbon dioxide turbine. First, an optimization is performed on a baseline trapezoidal turbine blade and a set of solution geometries is chosen from along the Pareto front. Next, a second optimization is completed on an advanced blade design and the geometries are grouped by performance characteristics and geometric features. The success of similar geometries across these two optimizations is also analyzed and demonstrates consistency of performance increases from tip geometries over the baseline geometry. An analysis of a flat tip geometry in a stationary condition is also performed to begin validation of annular cascades as a method for testing squealer tip geometries. 


Degree Type

  • Master of Science in Mechanical Engineering


  • Mechanical Engineering

Campus location

  • West Lafayette

Advisor/Supervisor/Committee Chair

Guillermo Paniagua Perez

Additional Committee Member 2

Ganesh Subbarayan-Shastri

Additional Committee Member 3

Ilias Bilionis

Additional Committee Member 4

Nesrin Ozalp