Biava, M. and Barakos, G.N. (2016) Optimisation of ducted propellers for hybrid air vehicles using high-fidelity CFD. Aeronautical Journal, 120(1232), pp. 1632-1657. (doi: 10.1017/aer.2016.78)
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Abstract
This paper presents performance analysis and design of ducted propellers for lighter-than-air vehicles. High- fidelity CFD simulations were first performed on a detailed model of the propulsor, and the results were in very good agreement with available experimental data. Additional simulations were performed using a simplified geometry, to quantify the effect of the duct and of the blade twist on the propeller performance. It was shown that the duct is particularly effective at low flight speed, and that the blades with relatively high twist have better performance over the flight envelope. Design of the optimal twist distribution and of the duct shape was also attempted, by coupling the flow solver with a quasi-Newton optimisation method. Flow gradients were computed by solving the discrete adjoint of the Reynolds Averaged Navier–Stokes equations using a FixedPoint Iteration scheme or a nested Krylov method with deflated restarting. The results show that the ducted propeller propulsive efficiency can be increased by 2%.
Item Type: | Articles |
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Additional Information: | The research leading to these results has received funding from the LOCATE project of Hybrid Air Vehicles Ltd and Innovate UK, grant agreement no. 101798. Results were obtained using the EPSRC funded ARCHIE-WeSt High Performance Computer (www.archie-west.ac.uk), EPSRC grant no. EP/K000586/1. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Barakos, Professor George and Biava, Dr Massimo |
Authors: | Biava, M., and Barakos, G.N. |
College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
Journal Name: | Aeronautical Journal |
Publisher: | Cambridge University Press |
ISSN: | 0001-9240 |
ISSN (Online): | 2059-6464 |
Published Online: | 04 July 2016 |
Copyright Holders: | Copyright © 2016 Royal Aeronautical Society |
First Published: | First published in Aeronautical Journal 120(1232): 1632-1657 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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