Aircraft airframe noise: Effect of bogie inclination on the unsteady flow field and noise production
Last updated on April 5, 2022
Computational methods are used to determine the flow field around a simplified landing gear geometry and the far field noise levels generated by this flow. The focus of this research is on the influence of bogie inclination angle on the flow features and the far field noise levels. A high quality hybrid grid of eight million cells was generated around a simplified main landing gear geometry. A structured grid consisting of 5.5 million cells are applied to regions near the geometry where complex flow features are expected. The unstructured grid of 2.5 million cells are applied to extend the domain so that appropriate boundary conditions to be applied. A hybrid grid provides a high resolution of the flow features near the bluff body geometry, and minimizes the cell count required to extend the domain to the outer edges where free stream boundary conditions can be applied.
