Simulation of a laminar flow model to enable design for manufacturing of laminar flow aerostructures

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Authors
Irani, Eddie
Wong, Seeho
Wong, See-Cheuk
Issue Date
2019-09
Type
Conference paper
Language
en_US
Keywords
Aircraft , Design for manufacturability , Economics , Fuel economy , Laminar boundary layer , Laminar flow , Manufacture , Reynolds number
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Abstract

Advances in manufacturing technology can produce smooth aircraft surfaces to achieve laminar flow at high Reynolds numbers which can reduce drag significantly. Potential benefits include increased range, improved fuel economy, and even reduced aircraft weight, resulting in improved operating economics and reduced emissions. However, due to practical constraints associated with the fabrication and assembly as well as operating constraints, laminar flow conditions are generally difficult to achieve and maintain. Steps or irregularities of the surfaces caused by manufacturing processes, non-seamless paint layers, dust, insects, dirt and even vibration can be enough to initiate transition and cause a laminar boundary layer to become turbulent at elevated Reynolds numbers. The present research effort is focused on using Computational Fluid Dynamics (CFD) to investigate the surface smoothness requirements for a laminar flow nacelle and validating the existing simulation tools [1].

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Irani, Eddie; Wong, Seeho; Wong, See-Cheuk. 2019. Simulation of a laminar flow model to enable design for manufacturing of laminar flow aerostructures. 6th Annual Composites and Advanced Materials Expo CAMX 2019, art. no.TP19-0763
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CAMX - The Composites and Advanced Materials Exp
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