Aerodynamic Inverse Design of Transonic Compressor Cascades with Stabilizing Elastic Surface Algorithm

The upgraded elastic surface algorithm (UESA) is a physical inverse design method that was recently developed for compressor cascade with double-circular-arc blades. In this method, the blade walls are modeled as Timoshenko beams smoothly deform because of difference between target and current pressure distributions. Nevertheless, UESA completely unstable an intense normal shock, which causes divergence due to high near shock displacement during geometry corrections. study, stabilized no geometrical filtration. new version distribution modulus along beam chosen increase its stiffness control deformations oscillations in region. Furthermore, prevent oscillations, nodes need be constrained move perpendicularly chord line. With these modifications, instability oscillation were removed through shape modification process. Two cases examined evaluate transonic shock. also capable finding nearest one.