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Journal articles on the topic 'Airfoil optimisation'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Fischer, Denes, Benjamin Church, Christian Navid Nayeri, and Christian Oliver Paschereit. "Investigation and Optimisation of High-Lift Airfoils for Airborne Wind Energy Systems at High Reynolds Numbers." Wind 3, no. 2 (2023): 273–90. http://dx.doi.org/10.3390/wind3020016.

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The potential of airfoil optimisation for the specific requirements of airborne wind energy (AWE) systems is investigated. Experimental and numerical investigations were conducted at high Reynolds numbers for the S1223 airfoil and an optimised airfoil with thin slat. The optimised geometry was generated using the NSGA-II optimisation algorithm in conjunction with 2D-RANS simulations. The results showed that simultaneous optimisation of the slat and airfoil is the most promising approach. Furthermore, the choice of turbulence model was found to be crucial, requiring appropriate transition model

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2

Porta Ko, Agustí, Sture Smidt, Roland Schmehl, and Manoj Mandru. "Optimisation of a Multi-Element Airfoil for a Fixed-Wing Airborne Wind Energy System." Energies 16, no. 8 (2023): 3521. http://dx.doi.org/10.3390/en16083521.

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Airborne wind energy systems benefit from high-lift airfoils to increase power output. This paper proposes an optimisation approach for a multi-element airfoil of a fixed-wing system operated in pumping cycles to drive a drum-generator module on the ground. The approach accounts for the different design objectives of the tethered kite’s alternating production and return phases. The airfoil shape is first optimised for the production phase and then adapted for the requirements of the return phase by modifying the flap setting. The optimisation uses the multi-objective genetic algorithm NSGA-II

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3

Su, Zhengyu, Baosheng Yang, Yongyuan Li, Yi Jiang, and Fantao Ren. "Research on the Overall Influence of Magnus Cylinders on Airfoil Structures and Structural Optimization." Journal of Physics: Conference Series 2755, no. 1 (2024): 012032. http://dx.doi.org/10.1088/1742-6596/2755/1/012032.

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Abstract With the coupling effect of Magnus cylinder and symmetric airfoil as the research object, the numerical analysis method is used to study the influence of Magnus cylinder layout position and protruding height ratio on the aerodynamic characteristics of the airfoil. Based on the aerodynamic law of Magnus airfoil and Optistruct deformer optimisation method, the optimisation model of Magnus airfoil structure is proposed. Results reveal that the placement of the Magnus cylinder near the leading edge of the upper surface and the trailing edge of the lower surface significantly impacts the a

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4

Valldosera Martinez, Robert, Frederico Afonso, and Fernando Lau. "Aerodynamic Shape Optimisation of a Camber Morphing Airfoil and Noise Estimation." Aerospace 9, no. 1 (2022): 43. http://dx.doi.org/10.3390/aerospace9010043.

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In order to decrease the emitted airframe noise by a two-dimensional high-lift configuration during take-off and landing performance, a morphing airfoil has been designed through a shape design optimisation procedure starting from a baseline airfoil (NLR 7301), with the aim of emulating a high-lift configuration in terms of aerodynamic performance. A methodology has been implemented to accomplish such aerodynamic improvements by means of the compressible steady RANS equations at a certain angle of attack, with the objective of maximising its lift coefficient up to equivalent values regarding t

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Grasso, Francesco, Domenico Coiro, Nadia Bizzarrini, and Giuseppe Calise. "Design of advanced airfoil for stall-regulated wind turbines." Wind Energy Science 2, no. 2 (2017): 403–13. http://dx.doi.org/10.5194/wes-2-403-2017.

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Abstract. Nowadays, all the modern megawatt-class wind turbines make use of pitch control to optimise the rotor performance and control the turbine. However, for kilowatt-range machines, stall-regulated solutions are still attractive and largely used for their simplicity and robustness. In the design phase, the aerodynamics plays a crucial role, especially concerning the selection/design of the necessary airfoils. This is because the airfoil performance is supposed to guarantee high wind turbine performance but also the necessary machine control capabilities. In the present work, the design of

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6

Neloy, Kumar Das. "Numerical Analysis of Lift Coefficients for NACA 4412 Airfoil Across Different Angles of Attack." International Journal of Inventive Engineering and Sciences (IJIES) 12, no. 5 (2025): 9–13. https://doi.org/10.35940/ijies.A8233.12050525/.

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<strong>Abstract: </strong>The accurate aerodynamic performance prediction is critical for designing and optimising airfoils used in aerospace, automotive, and renewable energy applications. This study focuses on evaluating and comparing the lift coefficients of the NACA 4412 airfoil using three distinct methodologies: CFD, wind tunnel experimentation, and the Panel method. The primary objective is to assess each technique's accuracy and limitations in capturing the airfoil's aerodynamic characteristics. CFD simulations were conducted using ANSYS FLUENT, applying a steady-state, incompressible

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7

Held, Christophe, and Alain Dervieux. "One-shot airfoil optimisation without adjoint." Computers & Fluids 31, no. 8 (2002): 1015–49. http://dx.doi.org/10.1016/s0045-7930(01)00043-3.

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8

Ughapu, Emmanuel I., Bernard A. Adaramola, Wasiu Oke, and Imhade P. Okokpujie. "Study of the Moment of Drag and Lift on Different Air-foil Shapes and Thickness During Wind Tunnel Application: A Review." E3S Web of Conferences 430 (2023): 01211. http://dx.doi.org/10.1051/e3sconf/202343001211.

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An experimental facility called a wind tunnel is used in aerodynamics to investigate how air behaves when it passes through solid things like wings or automobile bodies. Researchers can evaluate an object’s aerodynamic characteristics under many circumstances by producing a controlled airflow, including as variations in velocity, attack angle, or atmospheric pressure. The emergency of 3D computer simulation of the performance parameters of an airfoil which is characterised by optimisation and digital technology, are combined for easier determination of the aerodynamic characteristics of a chos

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9

Sahoo, Abhratej, Carlos Simao Ferreira, Akshay Koodly Ravishankara, Gerard Schepers, and Wei Yu. "Validation of an engineering model for vortex generators in a viscous-inviscid interaction method for airfoil analysis." Journal of Physics: Conference Series 2647, no. 11 (2024): 112012. http://dx.doi.org/10.1088/1742-6596/2647/11/112012.

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Abstract As the demand for renewable energy increases, wind turbine rotors will become larger with slender blades. Vortex Generators (VGs) are used for passive flow control to avoid flow separation and reduce unsteady loading on the thick root section of slender blades due to their simplicity, inexpensiveness, and the ability to retrofit them to blades. Aerodynamic load calculations for VGs involve long experimental campaigns or resource intensive CFD calculations. Due to their inherent time-intensive nature aeroelastic optimisation and design tools prefer to use simplified but accurate analys

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10

Bullen, R. D., and N. L. McKenzie. "Bat wing airfoil and planform structures relating to aerodynamic cleanliness." Australian Journal of Zoology 55, no. 4 (2007): 237. http://dx.doi.org/10.1071/zo07010.

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In this paper we examine 12 species of Western Australian bat for anatomical and morphometric attributes related to wing lift and drag characteristics. We present values for bat wing camber (typically 6.5–9%) and its location, measurements of wing planform and tip shape (typically elliptical but with two different tip designs), dimensions of wing leading-edge flaps (typically 8–10.5% of hand wing chord but with some species having much larger flaps up to 18%) and then discuss several features related to airflow separation control. All species assessed had thin, low-camber airfoil sections, an

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11

Trautsch, Stephan, Heike Mrech, Karl-Heinrich Grote, and Christiane Beyer. "Direct and flexible mesh contour coupling for airfoil optimisation." Multidiszciplináris tudományok 11, no. 5 (2021): 123–31. http://dx.doi.org/10.35925/j.multi.2021.5.12.

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Blade profiles are used in many technical systems, including in the use of wind and water energy, and in aviation and shipping. The shape of the airfoil contour has a crucial influence on the resulting forces at the cross-section around the airfoil. The optimisation tasks are characterised by an exceptionally large number and dynamics of the influencing parameters. These are generated by a combined flow-related and structural mechanical simulation. The current research presented here takes up these core elements of the shaping processes and makes them more flexible and transparent than convent

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12

Selvaraj, R. Meby, P. Ebenezer Sathish Paul, G. Uthaya Kumar, and M. Ramesh. "Optimisation of swept angles for airfoil NACA 6-series." International Journal of Computer Aided Engineering and Technology 9, no. 2 (2017): 229. http://dx.doi.org/10.1504/ijcaet.2017.083395.

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Ramesh, M., G. Uthaya Kumar, P. Ebenezer Sathish Paul, and R. Meby Selvaraj. "Optimisation of swept angles for airfoil NACA 6-series." International Journal of Computer Aided Engineering and Technology 9, no. 2 (2017): 229. http://dx.doi.org/10.1504/ijcaet.2017.10002535.

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14

Whan, Amanpreet, Harpreet Singh, Navdeep Malik, et al. "Optimising the design of auxetic core airfoil for wing morphing applications." Structural Integrity and Life 25, Special Issue A (2025): S17—S24. https://doi.org/10.69644/ivk-2025-sia-0017.

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Bird wings demonstrate phenomenal adaptation and aerodynamic performance across varied flight conditions. In contrast, conventional aircraft wings are designed for specific scenarios, limiting their adaptability. Therefore, the integration of smart cellular structures into morphing airfoils is crucial for furthering aircraft development. This entails integrating actuators, sensors, and innovative control systems to modernize aircraft engineering. One intriguing approach is adopting a re-entrant arrangement which exhibits a negative Poisson’s ratio, popularly known as auxetic behaviour. This pa

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15

Hacıogˇlu, Abdurrahman, and I˙brahim Özkol. "Transonic airfoil design and optimisation by using vibrational genetic algorithm." Aircraft Engineering and Aerospace Technology 75, no. 4 (2003): 350–57. http://dx.doi.org/10.1108/00022660310484275.

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16

De Tavernier, Delphine, Carlos Ferreira, and Gerard Bussel. "Airfoil optimisation for vertical‐axis wind turbines with variable pitch." Wind Energy 22, no. 4 (2019): 547–62. http://dx.doi.org/10.1002/we.2306.

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17

Magrini, Andrea, Ernesto Benini, Rita Ponza, et al. "Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil." Aerospace 6, no. 3 (2019): 31. http://dx.doi.org/10.3390/aerospace6030031.

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In the context of ambitious targets for reducing environmental impact in the aviation sector, dictated by international institutions, morphing aircraft are expected to have potential for achieving the required efficiency increases. However, there are still open issues related to the design and implementation of deformable structures. In this paper, we compare three constrained parameterisation strategies for the aerodynamic design of a morphing leading edge, representing a potential substitute for traditional high-lift systems. In order to facilitate the structural design and promote the feasi

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18

Wang, Lin, Xinzi Tang, and Xiongwei Liu. "Blade Design Optimisation for Fixed-Pitch Fixed-Speed Wind Turbines." ISRN Renewable Energy 2012 (August 16, 2012): 1–8. http://dx.doi.org/10.5402/2012/682859.

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Fixed-pitch fixed-speed (FPFS) wind turbines have some distinct advantages over other topologies for small wind turbines, particularly for low wind speed sites. The blade design of FPFS wind turbines is fundamentally different to fixed-pitch variable-speed wind turbine blade design. Theoretically, it is difficult to obtain a global mathematical solution for the blade design optimisation. Through case studies of a given baseline wind turbine and its blade airfoil, this paper aims to demonstrate a practical method for optimum blade design of FPFS small wind turbines. The optimum blade design is

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19

Granados-Ortiz, Francisco-Javier, Pablo Morales-Higueras, Joaquín Ortega-Casanova, and Alejandro López-Martínez. "Two-Dimensional-Based Hybrid Shape Optimisation of a 5-Element Formula 1 Race Car Front Wing under FIA Regulations." Machines 11, no. 2 (2023): 231. http://dx.doi.org/10.3390/machines11020231.

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Front wings are a key element in the aerodynamic performance of Formula 1 race cars. Thus, their optimisation makes an important contribution to the performance of cars in races. However, their design is constrained by regulation, which makes it more difficult to find good designs. The present work develops a hybrid shape optimisation approach to obtain an optimal five-element airfoil front wing under the FIA regulations and 17 design parameters. A first baseline design is obtained by parametric optimisation, on which the adjoint method is applied for shape optimisation via Mesh Morphing with

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20

Granados-Ortiz, Francisco-Javier, Higueras Pablo Morales, Joaquin Ortega-Casanova, and Martínez Alejandro López. "2D-based Hybrid Shape Optimisation of a 5-element Formula 1 Race Car Front Wing Under FIA Regulations." Machines 11, no. 2 (2023): 231. https://doi.org/10.3390/machines11020231.

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Front wings are a key element in the aerodynamic performance of Formula 1 race cars. Thus, their optimisation makes an important contribution to the performance of cars in races. However, their design is constrained by regulation, which makes it more difficult to find good designs. The present work develops a hybrid shape optimisation approach to obtain an optimal five-element airfoil front wing under the FIA regulations and 17 design parameters. A first baseline design is obtained by parametric optimisation, on which the adjoint method is applied for shape optimisation via Mesh Morphing with

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21

Hetyei, Csaba, and Ferenc Szlivka. "COUNTER-ROTATING DUAL ROTOR WIND TURBINE LAYOUT OPTIMISATION." Acta Polytechnica 61, no. 2 (2021): 342–49. http://dx.doi.org/10.14311/ap.2021.61.0342.

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General energy demand is continuously increasing, thus the energy generating assets need to be optimised for higher efficiency. Wind turbines are no exception. Their maximum efficiency can be determined on a theoretical basis. The limit is approached by researches day by day, utilizing the latest developments in airfoil design, blade structure and new and improved ideas in conventional and unconventional wind turbine layouts. In this paper, we are reviewing the conventional and unconventional wind turbines and their place in smart cities. Then, an unconventional wind turbine design, the CO-DRW

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22

Mirjalili, Seyedali, Tim Rawlins, Jan Hettenhausen, and Andrew Lewis. "A comparison of multi-objective optimisation metaheuristics on the 2D airfoil design problem." ANZIAM Journal 54 (July 1, 2013): 345. http://dx.doi.org/10.21914/anziamj.v54i0.6154.

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23

Zhu, Yujie, Yaping Ju, and Chuhua Zhang. "Proper orthogonal decomposition assisted inverse design optimisation method for the compressor cascade airfoil." Aerospace Science and Technology 105 (October 2020): 105955. http://dx.doi.org/10.1016/j.ast.2020.105955.

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24

Radhakrishnan, Jayakrishnan, and Dhruv Suri. "Design and Optimisation of a Low Reynolds Number Airfoil for Small Horizontal Axis Wind Turbines." IOP Conference Series: Materials Science and Engineering 377 (June 2018): 012053. http://dx.doi.org/10.1088/1757-899x/377/1/012053.

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25

Tousi, N. M., M. Coma, J. M. Bergadà, J. Pons-Prats, F. Mellibovsky, and G. Bugeda. "Active flow control optimisation on SD7003 airfoil at pre and post-stall angles of attack using synthetic jets." Applied Mathematical Modelling 98 (October 2021): 435–64. http://dx.doi.org/10.1016/j.apm.2021.05.016.

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26

Lewthwaite, Matthew Thomas, and Chiemela Victor Amaechi. "Numerical Investigation of Winglet Aerodynamics and Dimple Effect of NACA 0017 Airfoil for a Freight Aircraft." Inventions 7, no. 1 (2022): 31. http://dx.doi.org/10.3390/inventions7010031.

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Drag reduction is an ever-present challenge within the aeronautical engineering industry. This paper presents two substantial wing modifications: the addition of a winglet of a freighter aircraft and a dimpled wing on the NACA 0017 aerofoils. Studies on nine (9) different geometries of dimpled aerofoils were performed against a control model of an aerofoil without any dimple. Computational fluid dynamics (CFD) analysis was performed using two (2) commercial CFD platforms. This paper also explored two novel solutions of aircraft optimisation to mitigate the effects of drag and leading-edge pres

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27

Wang, Chen, Hamed Haddad Khodaparast, Michael I. Friswell, Alexander D. Shaw, Yuying Xia, and Peter Walters. "Development of a morphing wingtip based on compliant structures." Journal of Intelligent Material Systems and Structures 29, no. 16 (2018): 3293–304. http://dx.doi.org/10.1177/1045389x18783076.

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Compliant structures, such as flexible corrugated panels and honeycomb structures, are promising structural solutions for morphing aircraft. The compliant structure can be tailored to carry aerodynamic loads and achieve the geometry change simultaneously, while the reliability of the morphing aircraft can be guaranteed if conventional components and materials are used in the fabrication of the morphing structure. In this article, a compliant structure is proposed to change the dihedral angle of a morphing wingtip. Unsymmetrical stiffness is introduced in the compliant structure to induce the r

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Werthen, Edgar, Daniel Ribnitzky, David Zerbst, Martin Kühn, and Christian Hühne. "Aero-structural coupled optimization of a rotor blade for an upscaled 25 MW reference wind turbine." Journal of Physics: Conference Series 2626, no. 1 (2023): 012012. http://dx.doi.org/10.1088/1742-6596/2626/1/012012.

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Abstract One major challenge of the wind turbine industry is the reduction of the levelized cost of energy (LCoE) while following the strong demand for a higher annual energy production (AEP). To meet these goals, larger wind turbine sizes are required. The common method of upscaling existing wind turbine designs comes along with the problem of faster growing blade masses and costs compared to the AEP. Investigations in new technologies to improve the structural efficiency of larger blades can be supported by aero-structural coupled optimizations. The present work introduces a two-step aero-st

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29

Stalewski, Wieńczysław. "Improvement and Optimisation of Gyroplane Performance." Transactions on Aerospace Research 2017, no. 4 (2017): 103–22. http://dx.doi.org/10.2478/tar-2017-0031.

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Abstract The aim of this study was to investigate possibilities of improving performance characteristics of light gyroplane, as well to propose new or improved solutions enhancing performance of this type of rotorcraft. The study has been conducted based on computational methods of Computational Fluid Dynamics, Flight Dynamics, Computer Aided Design and Optimisation. Results of the research confirm that using advanced computational methods it is possible to improve significantly the performance characteristics of light gyroplane. It can be achieved both through optimisation of the main rotor d

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Stalewski, Wienczyslaw, and Wieslaw Zalewski. "Performance improvement of helicopter rotors through blade redesigning." Aircraft Engineering and Aerospace Technology 91, no. 5 (2019): 747–55. http://dx.doi.org/10.1108/aeat-01-2018-0009.

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Purpose The purpose of this paper is to determine dependencies between a rotor-blade shape and a rotor performance as well as to search for optimal shapes of blades dedicated for helicopter main and tail rotors. Design/methodology/approach The research is conducted based on computational methodology, using the parametric-design approach. The developed parametric model takes into account several typical blade-shape parameters. The rotor aerodynamic characteristics are evaluated using the unsteady Reynolds-averaged Navier–Stokes solver. Flow effects caused by rotating blades are modelled based o

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31

Haider, Aun. "Aerodynamic Optimisation and Stability Analysis of Solar-powered Unmanned Aerial Vehicle." NED UNIVERSITY JOURNAL OF RESEARCH - APPLIED SCIENCES 20, no. 4 (2024): 47–64. https://doi.org/10.35453/NEDJR-ASCN-2023-0016.

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Solar-powered unmanned aerial vehicles (UAVs) with long endurance can be utilised for areasurveillance as the regenerative nature of solar energy makes such UAVs a terrestrial satellite with24/7 endurance. This paper presents an aerodynamic optimisation scheme for UAVs through theselection of airfoils and wing planform during the preliminary design phase. Sizing of the tail andcontrol surface based on historical trends for similar aircraft is also substantiated. Finally, detailedaerodynamic and stability analyses of the optimised configuration validate adequate flying andhandling qualities of

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Bhutta, Aun Haider. "AERODYNAMIC OPTIMISATION AND STABILITY ANALYSIS OF SOLAR-POWERED UNMANNED AERIAL VEHICLE." Applied Sciences XX, no. 4 (2023): 47–64. http://dx.doi.org/10.35453/nedjr-ascn-2023-0016.

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Solar-powered unmanned aerial vehicles (UAVs) with long endurance can be utilised for area surveillance as the regenerative nature of solar energy makes such UAVs a terrestrial satellite with 24/7 endurance. This paper presents an aerodynamic optimisation scheme for UAVs through the selection of airfoils and wing planform during the preliminary design phase. Sizing of the tail and control surface based on historical trends for similar aircraft is also substantiated. Finally, detailed aerodynamic and stability analyses of the optimised configuration validate adequate flying and handling qualiti

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33

Koziel, Slawomir, and Leifur Leifsson. "Variable-fidelity aerodynamic shape optimisation of single-element airfoils at high-lift conditions." International Journal of Mathematical Modelling and Numerical Optimisation 2, no. 2 (2011): 194. http://dx.doi.org/10.1504/ijmmno.2011.039428.

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Mondal, Partha. "Prediction of Moment Using a Modified Discrete Vortex Method in Ground Effect." Defence Science Journal 71, no. 2 (2021): 146–52. http://dx.doi.org/10.14429/dsj.71.16127.

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The aerodynamics around a wing is modified when it comes near the ground. This is generally referred to as ground effect. In this work, a discrete vortex method based model which can predict two-dimensional (2D) ground effect from its free flight data is proposed. The required data in free flight could be generated either from high fidelity CFD solver or experiments. In this method, strength of the vortex distribution as obtained from discrete vortex based method is modified using a constrained optimisation procedure to match the free flight aerodynamic data. This vortex distribution is furthe

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Enderaaj Singh, Sukanta Roy, Yam Ke San, and Law Ming Chiat. "Optimisation of H-Darrieus VAWT Solidity for Energy Extraction in Cooling Tower Exhaust Systems." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 91, no. 2 (2022): 51–61. http://dx.doi.org/10.37934/arfmts.91.2.5161.

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The technologies surrounding renewable energy have been receiving surmountable attention to producing clean energy and reducing the dependency on depleting fossil fuel sources. In this context, research investigations on vertical axis wind turbines (VAWT) in free stream flow condition has been extensively conducted to improve the energy extraction efficiency from the wind. VAWTs are particularly advantageous in locations not suitable for conventional horizontal axis wind turbines (HAWT). However, the applications of VAWTs are still limited due to their lower performances compared to their coun

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ROŚKOWICZ, Marek, Ryszard CHACHURSKI, Sławomir TKACZUK, Piotr LESZCZYŃSKI, Maciej MAJCHER, and Łukasz OMEN. "Strength Analysis of a Ducted Axial Fan Blade." Problems of Mechatronics Armament Aviation Safety Engineering 9, no. 4 (2018): 85–100. http://dx.doi.org/10.5604/01.3001.0012.7334.

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This paper presents a numerical strength analysis of a ducted axial fan blade. Ducted axial fans are a large group of fluid-flow machines. The analysis was designed to determine the causes of cyclic failures of a ventilation unit. The paper presents a reverse engineering approach to the mapping of the fan blade’s geometrical features. The geometrical features were mapped by triangulation from the scanning images produced by a 3D optical scanner. These were followed by simplifying assumptions on which the numerical calculations were based. The numerical calculations were carried out at the oper

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Alam, AHM Zahirul. "Editorial." IIUM Engineering Journal 19, no. 1 (2018): i—iv. http://dx.doi.org/10.31436/iiumej.v19i1.917.

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    IIUM ENGINEERING JOURNAL    CHIEF EDITOR Ahmad Faris Ismail, IIUM, Malaysia TECHNICAL EDITOR Erry Yulian Triblas Adesta, IIUM, Malaysia EXECUTIVE EDITOR AHM Zahirul Alam, IIUM, Malaysia ASSOCIATE EDITOR Anis Nurashikin Nordin, IIUM, Malaysia LANGUAGE EDITOR Lynn Mason, Malaysia COPY EDITOR Hamzah Mohd. Salleh, IIUM, Malaysia  EDITORIAL BOARD MEMBERS Abdullah Al-Mamun, IIUM, Malaysia Abdumalik Rakhimov, IIUM, Malaysia Amir Akramin Shafie, IIUM, Malaysia Erwin S

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N. Varsha, M. D. Deshpande, and M. Sivapragasam. "Airfoil Optimisation at Ultra-Low Reynolds Number." Journal of Aerospace Sciences and Technologies, July 29, 2023, 347–53. http://dx.doi.org/10.61653/joast.v71i3.2019.156.

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In recent times micro-air vehicles are utilised for various civilian and military applications. Because of their small size and low flight speeds they fly in the low Reynolds number (Re) regime. At such low Re the aerodynamic characteristics, most importantly the lift-to-drag ratio (Cl/Cd), are deteriorated. An improvement in (Cl/Cd) can lead to enhanced vehicle performance. The aerodynamic improvements can be achieved by optimising the wing profile geometry. In the present paper, optimisation of an airfoil is done to maximise (Cl/Cd) at Re = 1000. The upper and lower surfaces of a modified NA

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"Optimisation of Trapped Vortex Cavity for Airfoil Separation Control." Journal of Applied Fluid Mechanics 15, no. 1 (2022). http://dx.doi.org/10.47176/jafm.15.01.32684.

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V, Somashekar, Cm Vigneswaran, Inamul Hasan, and Srinath R. "Streamlining Fluid Flow: Injection Slot Optimisation for Coflow Jet Airfoil." Progress in Computational Fluid Dynamics, An International Journal 1, no. 1 (2024). https://doi.org/10.1504/pcfd.2024.10068365.

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Porta Ko, Agustí, Sergio González Horcas, Jordi Pons-Prats, and Gabriel Bugeda. "Development of a multi-fidelity optimisation strategy based on hybrid methods." Structural and Multidisciplinary Optimization 67, no. 9 (2024). http://dx.doi.org/10.1007/s00158-024-03866-z.

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AbstractA multi-fidelity optimisation strategy has been developed in the present work, and its performance is illustrated through a series of test cases. The strategy is based on hybrid methods such that two genetic optimisation algorithms are employed, each coupled to a different fidelity level with transfer of information between them. The aim is that the low fidelity model, being less accurate but with a lower computational cost, performs a comprehensive search along the design space guiding the high fidelity model to the optimum region. This strategy has been shown to reduce the computatio

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Magrini, Andrea, Ernesto Benini, Rita Ponza, et al. "Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil." Aerospace, March 6, 2019. https://doi.org/10.3390/aerospace6030031.

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In the context of ambitious targets for reducing environmental impact in the aviation sector, dictated by international institutions, morphing aircraft are expected to have potential for achieving the required efficiency increases. However, there are still open issues related to the design and implementation of deformable structures. In this paper, we compare three constrained parameterisation strategies for the aerodynamic design of a morphing leading edge, representing a potential substitute for traditional high-lift systems. In order to facilitate the structural design and promote the feasi

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Sabangban, Numchoak, Natee Panagant, Sujin Bureerat, et al. "Simultaneous aerodynamic and structural optimisation of a low-speed horizontal-axis wind turbine blade using metaheuristic algorithms." Materials Testing, April 12, 2023. http://dx.doi.org/10.1515/mt-2022-0308.

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Abstract This work presents a concurrent design and multi-objective optimisation framework of horizontal axis wind turbine blades, made of composite material, for low wind speed. The optimisation model aims to minimise the structural mass of the blade whilst simultaneously maximising the turbine power output, subjected to three constraints viz. blade tip deflection, and Tsai-Hill and von Mises criteria. The design variables are blade shape and details of the internal blade structure. The control points and polynomial interpolation technique were adopted to determine the blade shape while the a

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Zhang, Y., X. Zhang, and G. Chen. "The aerodynamic optimisation of a low-Reynolds paper plane with adjoint method." Aeronautical Journal, August 24, 2020, 1–15. http://dx.doi.org/10.1017/aer.2020.78.

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ABSTRACT The aerodynamic performance of a deployable and low-cost unmanned aerial vehicle (UAV) is investigated and improved in present work. The parameters of configuration, such as airfoil and winglet, are determined via an optimising process based on a discrete adjoint method. The optimised target is locked on an increasing lift-to-drag ratio with a limited variation of pitching moments. The separation that will lead to a stall is delayed after optimisation. Up to 128 design variables are used by the optimised solver to give enough flexibility of the geometrical transformation. As much as 2

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Paul, Okonkwo, and Smith Howard. "Packaging in a Multivariate Conceptual Design Synthesis of a BWB Aircraft." May 4, 2014. https://doi.org/10.5281/zenodo.1092884.

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A study to estimate the size of the cabin and major aircraft components as well as detect and avoid interference between internally placed components and the external surface, during the conceptual design synthesis and optimisation to explore the design space of a BWB, was conducted. Sizing of components follows the Bradley cabin sizing and rubber engine scaling procedures to size the cabin and engine respectively. The interference detection and avoidance algorithm relies on the ability of the Class Shape Transform parameterisation technique to generate polynomial functions of the surfaces of

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Liu, Yu Min, Patrick Hendrick, Zhengping Zou, and Frank Buysschaert. "Statistical and Computational Evaluation of Empirical Axial Turbine Correlations in Design of Centrifugal Turbines." Journal of Turbomachinery, September 23, 2021, 1–31. http://dx.doi.org/10.1115/1.4052525.

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Abstract Centrifugal turbines have recently regained interest of the engineering community as they could serve as cost-effective alternatives in diverse energy applications. In this device, the working fluid expands in a centrifugal flowpath and entails rotation of concentric rings of airfoil-shaped blades. Yet in their current design paradigm, their meanline performance estimation and optimisation have dubiously exploited axial turbine empirical loss correlations. To the authors knowledge, there are no theoretical nor practical foundation that could justify such practice. Hence, this paper in

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Mar Aye, Cho, Kittinan Wansaseub, Sumit Kumar, et al. "Airfoil Shape Optimisation Using a Multi-Fidelity Surrogate-Assisted Metaheuristic with a New Multi-Objective Infill Sampling Technique." Computer Modeling in Engineering & Sciences, 2023, 1–18. http://dx.doi.org/10.32604/cmes.2023.028632.

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Flavio, Gagliardi, and Giannakoglou Kyriakos. "RBF-based morphing of B-Rep models for use in aerodynamic shape optimization." October 5, 2019. https://doi.org/10.5281/zenodo.3482751.

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This paper presents a shape parameterization method based on morphing that acts directly onCAD-compatible Boundary-Representations (B-Rep), effectively integrated into aerodynamic shapeoptimization. The proposed technique requires the definition of a small number of ”handles”, which arestrategically placed around or on the B-Rep shapes to be optimized. Displacement vectors associatedwith these handles are used as design variables in the optimization method. Using Radial BasisFunctions (RBF) as an interpolation method, these displacements are transferred from the handles tothe Non-U

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Ilias, Vasilopoulos, Asouti Varvara, Giannakoglou Kyriakos, and Meyer Marcus. "Gradient-based Pareto front approximation applied to turbomachinery shape optimization." October 1, 2019. https://doi.org/10.5281/zenodo.3466876.

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Multi-objective optimization has been rising in popularity, especially within an industrial environment, where several cost functions often need to be considered during the design phase. Traditional gradient-free approaches, such as evolutionary algorithms, can be employed to compute a front of equally suitable solutions a designer can choose from, with a high computational cost though, particularly in high- dimensional design spaces. In this paper, a gradient-based algorithm is developed for efficiently tracing the Pareto front in bi-objective aerodynamic shape optimization problems, where an

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Gastaldi, Chiara, and Muzio M. Gola. "Platform Centered Reduction: a Process Capturing the Essentials for Blade-Damper Coupled Optimization." Journal of Engineering for Gas Turbines and Power, November 21, 2020. http://dx.doi.org/10.1115/1.4049187.

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Abstract The purpose of this paper is to develop an attractive tool for designers in the initial design phase of the damping of turbomachinery blades through dry friction underplatform dampers. The paper shows how, to this purpose, certain reasonable simplifications are introduced in the procedure and in the model, leaving the customary full high fidelity computations to the final design verification analysis. The key simplifications here considered are: the blade neck is modelled with Euler beam finite elements (FE) to speed up the updating of its dimensions during the optimisation process; t

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