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Application of Computational Fluid Dynamics to Aerodynamics

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

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 3132

Special Issue Editor


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Guest Editor
Department of Aerospace Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
Interests: aerodynamics; biomedical engineering; CFD, rocket technology

Special Issue Information

Dear Colleagues,

The study of how air flows around objects is known as aerodynamics. It is perhaps the most well-known application of CFD. Design engineers, aerospace engineers, research labs and industries all employ CFD to reduce air drag and friction while boosting product efficiency. Aside from the ability to build aerodynamic products without having to invest in a large number of physical prototypes, CFD allows engineers to test extremely modest modifications to their design to maximize performance before manufacturing. It aids in the understanding of complex flows surrounding different classes of objects and has a wide range of applications. We have organized this Special Issue to collect the relevant studies applied to the use of computational fluid dynamic techniques in applied aerodynamics. The topics include but are not limited to CFD for Unsteady Aerodynamics; Incompressible–Compressible Aerodynamics; Turbulence; Boundary Layer; Meshing and Modeling; Adaptive Aerodynamics; High-Performance Computing-based CFD; Insect Aerodynamics, etc. We look forward to your high-qualified contributions, especially those relevant to the CFD vision 2023 from physical modeling, algorithms, modeling and meshing and knowledge extraction to MDAO (petascale towards exascale).

Prof. Dr. Kamarul Arifin Ahmad
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 aerodynamics
  • computational fluid dynamics
  • incompressible aerodynamics
  • compressible aerodynamics
  • turbulence
  • boundary layer
  • reduced-order modeling
  • adaptive aerodynamics
  • high-performance computing
  • biomimetics
  • insect aerodynamics

Published Papers (2 papers)

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Research

16 pages, 2521 KiB  
Article
Testing a Generalized Two-Equation Turbulence Model for Computational Aerodynamics of a Mid-Range Aircraft
by Viola Rossano and Giuliano De Stefano
Appl. Sci. 2023, 13(20), 11243; https://doi.org/10.3390/app132011243 - 13 Oct 2023
Viewed by 1418
Abstract
The generalized k-ω formulation provides a relatively new flexible eddy-viscosity Reynolds-averaged Navier–Stokes modeling approach to turbulent flow simulation, where free coefficients allow for fine-tuning and optimal adjusting of the turbulence closure procedure. The present study addressed the calibration of this versatile [...] Read more.
The generalized k-ω formulation provides a relatively new flexible eddy-viscosity Reynolds-averaged Navier–Stokes modeling approach to turbulent flow simulation, where free coefficients allow for fine-tuning and optimal adjusting of the turbulence closure procedure. The present study addressed the calibration of this versatile model for the aerodynamic design of an innovative mid-range commercial airplane by carrying out a series of simulations for varying model coefficients. Comparing the different solutions with each other, as well as with reference experimental and higher-fidelity numerical data, the performance of the generalized procedure in predicting the aerodynamic loading on the aircraft model was systematically examined. While drawing particular attention to the high-lift regime, the set of model parameters giving the best results was practically determined. Full article
(This article belongs to the Special Issue Application of Computational Fluid Dynamics to Aerodynamics)
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19 pages, 14247 KiB  
Article
The Aerodynamic Interaction Effects between the Rotor and Fuselage on the Drag Performance of a Civil Helicopter in Forward Flight
by Wenbo Shi, Heng Zhang and Yuanxiang Li
Appl. Sci. 2023, 13(13), 7376; https://doi.org/10.3390/app13137376 - 21 Jun 2023
Viewed by 1294
Abstract
The aerodynamic interaction between the rotor and fuselage is an important consideration in relation to the drag performance prediction of helicopters. In this paper, based on dynamic patched-grid technology coupled with a three-dimensional N–S equation solver, a numerical study of the aerodynamic interaction [...] Read more.
The aerodynamic interaction between the rotor and fuselage is an important consideration in relation to the drag performance prediction of helicopters. In this paper, based on dynamic patched-grid technology coupled with a three-dimensional N–S equation solver, a numerical study of the aerodynamic interaction effects between the rotor and fuselage on the aerodynamic performance and flow field of the fuselage of a light civil helicopter is carried out under the forward flight condition. The deterioration of the drag performance and the evolution of the flow field structure caused by the rotation of the blades are illustrated. Due to the aerodynamic interaction, the drag of the fuselage is increased by 124.1% while the cycle of drag fluctuation is observed in one full revolution of the rotor with a change in amplitude of ±20%. The comparative results between the rotor-off and rotor-on cases show that the aerodynamic interaction effects between the rotor and fuselage on the drag performance are mainly reflected in the influence of the backward-developing rotor wake on the flow field of the rear part of the fuselage. An additional afterbody vortices system is induced, leading to a large reverse pressure gradient on the rear surface of the helicopter, which contributes to an increase in the pressure drag. Full article
(This article belongs to the Special Issue Application of Computational Fluid Dynamics to Aerodynamics)
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