Robust Design of a Gas Turbine Engine Secondary Flow System

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Robust Design of a Gas Turbine Engine Secondary
Flow System
Vince Sidwell, Prof. Dave Darmofal

• Motivation
• Gas turbine engine performance and durability
  relies on the performance of the secondary flow
  system.
• The variability in the performance of the
  secondary flow system appears to be linked to
  shortfalls in engine durability.
• Research Objectives
• Determine a method to peform robust design on gas
  turbine engine secondary flow systems.
• Determine the characteristics of a robust
  secondary flow system.

Two turbine blades from the same engine. Note
the difference in condition.
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Robust Design of a Gas Turbine Engine Secondary
Flow System
Secondary Flow System
Region of Interest
Combustor
Minidisk
Turbine Disk
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Robust Design of a Gas Turbine Engine Secondary
Flow System
Example of Variability