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Design optimization method for variable geometry turbines considering multi-operating conditions
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DOI：10.1016/j.ast.2025.111540.png)
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Abstract
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• Design optimization method for variable geometry turbines is proposed. • Method for precise estimation of stator throat and outflow angle is presented. • Kriging-based multi-objective aerodynamic optimization of rotor is conducted. • Efficiencies of a prototype turbine are notably improved under high- and low- mass conditions.
Keywords:
Variable geometry turbine
Preliminary design
Performance estimation
Multi-objective genetic optimization
Blade aerodynamic optimization
Kriging model
2D
Two-dimensional
3D
Three-dimensional
CFD
Computational Fluid Dynamics
LHD
Latin Hypercube Design
RANS
Reynolds-Averaged Navier-Stokes
VCE
Variable cycle engine
VGT
Variable geometry turbine
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