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

Foad Mehdi Zadeh | Zendy; JeanYves Trépanier | Zendy; Eddy Petro | Zendy

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

Author(s) -

Foad Mehdi Zadeh,

JeanYves Trépanier,

Eddy Petro

Publication year - 2013

Publication title -

international journal of aerospace engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.361

H-Index - 22

eISSN - 1687-5974

pISSN - 1687-5966

DOI - 10.1155/2013/284206

Subject(s) - computational fluid dynamics , inlet , distortion (music) , boundary value problem , airflow , mechanics , turbine , engineering , simulation , structural engineering , computer science , marine engineering , mechanical engineering , physics , mathematics , mathematical analysis , amplifier , cmos , electronic engineering

The design of an intake for a gas turbine engine involves CFD-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 theflow 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

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