Computational Analysis of a Swirl Distortion Generation Method Using the Wishbone Vortex Generator.

Jet engines are used to intake air for their operation, unfortunately the air ingested always has a non-uniformity that affects engine operation and performance. While total pressure distortions have been widely studied, the influence of swirl distortions on engine performance is less well understood. In order to analyse the interaction between swirl distortion and the engine, several methods have been created which are more or less accurate and complex. In this article a swirl distortion generation method, for a test bench, based on the use of vortex generators, more precisely of the Wishbone type, will be analysed computationally. The type of distortion of the vortex generator, the influence of the geometrical parameters on the generated distortion and the limits of this method will be defined. In order to analyse the distortions generated by the Wishbone, a computational analysis of the target distortions generated by three different S-duct geometries was carried out. The three geometries differ from the geometric shape of the input section, and present three geometries that are close to those that are incorporated in new aircraft designs.