Development and Validation of a New Boundary Condition for Intake Analysis with Distortion

The design of an intake for a gas turbine engine involves CFD (computational fluid dynamics)-based investigation and experimental assessment in an intake test rig. In both cases, the engine is represented by a mass flux sink, usually positioned a few fan radii aft of the real fan face. In general, this approach is sufficient to analyze intake geometry for low distortion at the fan face, because in this case the interaction of the fan with the inlet flow can be neglected. Where there are higher levels of distortion at the fan face, the interaction could become more significant and a different approach would be preferable. One alternative that takes into account the interaction in such cases includes the fan in the analysis of the intake, using either a steady or unsteady flow model approach. However, this solution is expensive and too computationally intensive to be useful in design mode. The solution proposed in this paper is to implement a new boundary condition at the fan face which better represents the interaction of the fan with the flow in the air intake in the presence of distortion. This boundary condition includes a simplified fan model and a coupling strategy applied between the fan and the inlet. The results obtained with this new boundary condition are compared to full 3D unsteady CFD simulations that include the fan.

• Record URL:
  • https://doi.org/10.1155/2013/284206
• Supplemental Notes:
  • © 2013 Foad Mehdi Zadeh et al.
• Authors:
  • Mehdi Zadeh, Foad
  • Trepanier, Jean-Yves
  • Petro, Eddy
• Publication Date: 2013

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: Article ID 284206
• Serial:
  • International Journal of Aerospace Engineering
  • Volume: 2013
  • Publisher: Hindawi Publishing Corporation
  • Serial URL: http://www.hindawi.com/journals/ijae
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Air intakes; Aircraft; Boundary value problems; Engine fans; Fluid dynamics; Turbine engines; Vehicle design
• Subject Areas: Aviation; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01499407
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 21 2013 9:21AM