II. Introduction esh generation and adaptivity are highlighted in the NASA CFD Vision 2030
Study1 as one of the significant bottlenecks in the CFD workflow, with faster more reliable …

The increased need to design higher performing aerodynamic shapes has led to design
optimization cycles requiring high-fidelity CFD models and high-dimensional …

Because of manufacturing variations, no real turbine blade exactly conforms to its nominal
geometry. Even minimal deviations are known to affect aerodynamic performance, blade …

The tip clearance size has historically been considered to be the main factor affecting
stability range in axial fan and compressors. This paper reveals that the stall characteristics …

Turbomachinery active subspace performance maps are two-dimensional (2D) contour plots
that illustrate the variation of key flow performance metrics with different blade designs …

The next generation of turbofan aero-engines are likely to have an increase in fan diameter
to reduce the specific thrust and increase the overall propulsive efficiency. More compact …

Additive manufacturing (AM) has transformed the ability to accelerate gas turbine
component research and development at a fraction of the cost and time associated with …

A novel mesh deformation technique is developed based on the Delaunay graph map**
(DGM) method and the radial basis function (RBF) method. The algorithm combines the …

Geometry scaling technique, as one of the essential steps in aerodynamic redesign of multi-
stage compressor, directly determines whether the new scaled geometry meets the required …

Robust design is a multi-objective optimization framework for obtaining designs that perform
favorably under uncertainty. In this paper robust design is used to redesign a highly loaded …