Turbomachinery Simulation Impact on Design, Understanding, and Optimization (Extended)

This paper presents the impact of Turbomachinery Simula-
tion from simple analytical simulations to high fidelity CFD and
Finite Element Analyses on the design of turbomachinery and the
understanding of flow physics that is then used to improve design
approaches. The impact of optimization is also presented. The
best approach for tool development is to work with a compres-
sor, fan, or turbine designer or to work on the design process
directly. The paper represents the work and impact of the author
over his 45-year career and provides insight for both new and
experienced engineers. The paper explores applications of dis-
tortion from a downstream fan frame, the first uses of 3D CFD
for fan, compressor and turbine design, and for the simulation of
the GE90 turbofan engine in 3D.

The positive impact in performance due to turbomachinery
simulation has led to much improved turbomachinery efficien-
cies and reduced fuel burn of engines and aircraft. This benefit
has been due to the direct interaction with the designers, so the
simulations impact the design and product. The added impact
of multi-disciplinary simulations has also had impact on greater
life, less weight, and reduced noise. Future direction for simula-
tions are also presented.