Multi-Objective Shape Optimization of a Boundary Layer Ingesting Engine Intake
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Boundary Layer Ingesting (BLI) refers to the ingesting of the aircraft wake by the propulsors and has been associated with reduced fuel burn. Although, this can potentially be offset by the reduced efficiency and stability experienced by the propulsor in the presence of distorted inflow. Therefore, engine intakes must be optimized in order to mitigate the effects of BLI on the propulsion system. In this work, the shape optimization of a BLI intake is investigated using a free form deformation technique in combination with a multi-objective genetic algorithm, in order to minimize pressure losses and distortion at the engine inlet. The general trend of the optimal designs shows that to reduce the distortion the optimizer accelerates the flow to increase the dynamic pressure at the engine inlet. In contrast, the pressure losses were reduced by decreasing the velocity as well as shifting the region of maximum velocity to the outlet.
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Copyright © 2021 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2021
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sudasinghe-multiobjectiveshapeoptimizationofaboundary.pdf | 2023-05-05 | Public | Download |