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Applied Sciences
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Advances in Unsteady Aerodynamics and Aeroelasticity
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Advances in Unsteady Aerodynamics and Aeroelasticity

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Aerospace Science and Engineering".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 4097

Special Issue Editor

Dr. Flávio D. Marques

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Engineering School of São Carlos, University of São Paulo, São Paulo 13566-590, Brazil
Interests: linear and nonlinear aeroelasticity; unsteady aerodynamics; aeronautical smart structures; non-conventional control systems; applications of neural networks; fuzzy logic; genetic algorithms in aerospace problems

Special Issue Information

Dear Colleagues,

Unsteady aerodynamics and aeroelasticity represent two interconnected fields critical to the design, analysis, and operation of a wide range of engineering systems, including aircraft, wind turbines, bridges, and automotive structures. This Special Issue aims to provide a platform for researchers and practitioners to showcase their latest advancements, methodologies, and insights in these areas, fostering collaboration and knowledge exchange to address current challenges and propel innovation forward.

Prospective authors are invited to submit original research articles, review papers, and short communications relevant to the theme of this Special Issue. Submissions will undergo a rigorous peer review process to ensure that the accepted contributions are of a high quality and are significant. Contributions are invited to be submitted on a broad spectrum of topics related to unsteady aerodynamics and aeroelasticity, including, but not limited to, the following:

  1. Unsteady flow phenomena and their effects on aerodynamic performance;
  2. Aeroelastic instabilities and their implications for structural integrity and safety;
  3. Novel computational methods and numerical simulations for analyzing unsteady aerodynamic phenomena;
  4. Experimental techniques and validation studies in unsteady aerodynamics and aeroelasticity;
  5. Aeroelastic control strategies for enhancing stability and performance;
  6. Application of unsteady aerodynamics and aeroelasticity principles in aerospace, wind energy, civil engineering, and automotive industries;
  7. Multiphysics and multiscale modeling approaches for coupled unsteady aerodynamics and aeroelasticity problems;
  8. Effects of unsteady aerodynamics on structural fatigue, flutter, and dynamic response;
  9. Advances in materials and structural designs to mitigate unsteady aerodynamic loads;
  10. Case studies, practical applications, and real-world challenges in unsteady aerodynamics and aeroelasticity.

Dr. Flávio D. Marques
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • unsteady flow
  • aeroelastic instabilities
  • dynamic aeroelasticity
  • flutter analysis
  • transient aerodynamics
  • aeroelastic control
  • flow control

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

20 pages, 6637 KiB  
Article
Kolmogorov–Arnold Networks for Reduced-Order Modeling in Unsteady Aerodynamics and Aeroelasticity
by Yuchen Zhang, Han Tang, Lianyi Wei, Guannan Zheng and Guowei Yang
Appl. Sci. 2025, 15(11), 5820; https://doi.org/10.3390/app15115820 - 22 May 2025
Viewed by 95
Abstract
Kolmogorov–Arnold Networks (KANs) are a recent development in machine learning, offering strong functional representation capabilities, enhanced interpretability, and reduced parameter complexity. Leveraging these advantages, this paper proposes a KAN-based reduced-order model (ROM) for unsteady aerodynamics and aeroelasticity. To effectively capture temporal dependencies inherent [...] Read more.
Kolmogorov–Arnold Networks (KANs) are a recent development in machine learning, offering strong functional representation capabilities, enhanced interpretability, and reduced parameter complexity. Leveraging these advantages, this paper proposes a KAN-based reduced-order model (ROM) for unsteady aerodynamics and aeroelasticity. To effectively capture temporal dependencies inherent in nonlinear unsteady flow phenomena, an architecture termed Kolmogorov–Arnold Gated Recurrent Network (KAGRN) is introduced. By incorporating a recurrent structure and a gating mechanism, the proposed model effectively captures time-delay effects and enables the selective control and preservation of long-term temporal dependencies. This architecture provides high predictive accuracy, good generalization capability, and fast prediction speed. The performance of the model is evaluated using simulations of the NACA (National Advisory Committee for Aeronautics) 64A010 airfoil undergoing harmonic motion and limit cycle oscillations in transonic flow conditions. Results demonstrate that the proposed model can not only accurately and efficiently predict unsteady aerodynamic coefficients, but also effectively capture nonlinear aeroelastic responses. Full article
(This article belongs to the Special Issue Advances in Unsteady Aerodynamics and Aeroelasticity)
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17 pages, 4363 KiB  
Article
Impact of Aerodynamic Interactions on Aeroelastic Stability of Wing-Propeller Systems
by Nils Böhnisch, Carsten Braun, Pier Marzocca and Vincenzo Muscarello
Appl. Sci. 2024, 14(19), 8709; https://doi.org/10.3390/app14198709 - 26 Sep 2024
Cited by 2 | Viewed by 1942
Abstract
This paper presents initial findings from aeroelastic studies conducted on a wing-propeller model, aimed at evaluating the impact of aerodynamic interactions on wing flutter mechanisms and overall aeroelastic performance. The flutter onset is assessed using a frequency-domain method. Mid-fidelity tools based on the [...] Read more.
This paper presents initial findings from aeroelastic studies conducted on a wing-propeller model, aimed at evaluating the impact of aerodynamic interactions on wing flutter mechanisms and overall aeroelastic performance. The flutter onset is assessed using a frequency-domain method. Mid-fidelity tools based on the time-domain approach are then exploited to account for the complex aerodynamic interaction between the propeller and the wing. Specifically, the open-source software DUST and MBDyn are leveraged for this purpose. The investigation covers both windmilling and thrusting conditions. During the trim process, adjustments to the collective pitch of the blades are made to ensure consistency across operational points. Time histories are then analyzed to pinpoint flutter onset, and corresponding frequencies and damping ratios are identified. The results reveal a marginal destabilizing effect of aerodynamic interaction on flutter speed, approximately 5%. Notably, the thrusting condition demonstrates a greater destabilizing influence compared to the windmilling case. These comprehensive findings enhance the understanding of the aerodynamic behavior of such systems and offer valuable insights for early design predictions and the development of streamlined models for future endeavors. Full article
(This article belongs to the Special Issue Advances in Unsteady Aerodynamics and Aeroelasticity)
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12 pages, 664 KiB  
Article
The Aerodynamics of New Design Soccer Balls Using a Three-Dimensional Printer
by Sungchan Hong, John Eric Goff and Takeshi Asai
Appl. Sci. 2024, 14(9), 3932; https://doi.org/10.3390/app14093932 - 5 May 2024
Viewed by 1543
Abstract
Eight balls were manufactured with a 3D printer to resemble various types of 32-panel soccer balls. One ball was completely smooth, whereas the other seven possessed various dimple patterns on their surface panels. Seam width and seam depth were also varied. Wind-tunnel experiments [...] Read more.
Eight balls were manufactured with a 3D printer to resemble various types of 32-panel soccer balls. One ball was completely smooth, whereas the other seven possessed various dimple patterns on their surface panels. Seam width and seam depth were also varied. Wind-tunnel experiments were performed to extract aerodynamic coefficients, and also to determine the critical Reynolds number for each manufactured ball. A new surface roughness parameter is introduced, and a fitting formula is presented, which allows for the prediction of the critical Reynolds number if the new parameter is known. Full article
(This article belongs to the Special Issue Advances in Unsteady Aerodynamics and Aeroelasticity)
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