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Abstract Boundary Layer Ingestion (BLI) has gained significant attention as a potential aerodynamic concept for improving the performance and efficiency of modern aircraft. It can significantly reduce the total pressure losses and, as a result, increase the propulsion efficiency of the engine. Enhanced propulsion efficiency leads directly to reduced fuel consumption 1,2. Besides these above-mentioned benefits, the BLI has also some undesirable effects, like inhomogeneous inflow in the engine intake. This distorted inflow interacts with the rotating blades, which leads to increased blade vibrations, additional noise sources and unfavorable aerodynamic properties 3,4,5. This study investigates the impact of BLI on the characteristics of the fan, focusing on pressure, temperature and velocity field. The comprehensive investigation of the application of BLI through a combination of experimental and numerical approaches to assess its influence on the fan behavior is presented in this paper.
Lengyel-Kampmann et al. (Mon,) studied this question.