Results 61 to 70 of about 1,855 (186)

Effects of an Owl Airfoil on the Aeroacoustics of a Small Wind Turbine

open access: yesEnergies
Aerodynamic noise emitted by small wind turbines is a concern due to their proximity to urban environments. Broadband airfoil self-noise has been found to be the major source, and several studies have discussed techniques to reduce airfoil leading-edge ...
Dean Sesalim, Jamal Naser
doaj   +1 more source

Adaptive Free-Form Deformation Parameterization Based on Spring Analogy Method for Aerodynamic Shape Optimization

open access: yesFluids
An adaptive Free-Form Deformation parameterization method based on a spring analogy is presented for aerodynamic shape optimization problems. The proposed method effectively incorporates the gradients of the objective and constraint functions, achieving ...
Jinxin Zhou   +3 more
doaj   +1 more source

Airfoil Optimization of Tiltrotor Aircraft Forward Flight Mode Based on Isight

open access: yesHangkong gongcheng jinzhan, 2019
As one of the main development trends of the next generation rotor-crafts, it is of important significance to study the aerodynamic optimization design of its wings for improving the flight performance of tiltrotor aircraft.NACA2412 is employed as the ...
Zhao Guang   +4 more
doaj   +1 more source

The History of the Slotted Natural-Laminar-Flow Airfoil for Improved Fuel Efficiency

open access: yesAerospace
It is well established that increasing vehicle efficiency enables the achievement of N + 3 sustainable air travel goals. To this end, the integration of a slotted natural-laminar-flow airfoil with a transonic, truss-based commercial wing configuration is
Sreya Kumpatla   +2 more
doaj   +1 more source

The effect of variations in first- and second-order derivatives on airfoil aerodynamic performance

open access: yesEngineering Applications of Computational Fluid Mechanics, 2017
The geometric factors which influence airfoil aerodynamic performance are attributed to variations in local first- and second-order curvature derivatives.
Penghui Yi   +4 more
doaj   +1 more source

Design optimization of a multi-stage axial compressor using through flow and a database of optimal airflows

open access: yesJournal of the Global Power and Propulsion Society, 2018
The basic tool set to design multi-stage axial compressors consists of fast codes for throughflow and blade-to-blade analysis. Detailed blade row design is conducted with 3D CFD, mainly to control the end wall flow.
Markus Schnoes   +2 more
doaj   +1 more source

Airfoil Preference and Adjustable Camber Impact Analysis for Trans-Medium Fixed-Wing Vehicles

open access: yes水下无人系统学报
The key to the realization of air-water trans-medium flight lies in the profile design of trans-medium flight and the satisfaction of different requirements of aerodynamic efficiency for air cruise and airfoil for underwater glide. In this paper, a trans-
Jixin LU   +5 more
doaj   +1 more source

Enhanced Airfoil Design Optimization Using Hybrid Geometric Neural Networks and Deep Symbiotic Genetic Algorithms

open access: yesApplied Sciences
Optimal airfoil design remains a critical challenge in aerodynamic engineering, with traditional methods requiring extensive computational resources and iterative processes.
Özlem Batur Dinler
doaj   +1 more source

Generating airfoils from text: FoilCLIP, A novel framework for language-conditioned aerodynamic design

open access: yesTheoretical and Applied Mechanics Letters
Recent advances in contrastive language‒image pretraining (CLIP) models and generative AI have demonstrated significant capabilities in cross-modal understanding and content generation. Based on these developments, this study introduces a novel framework
Mingcheng Lei, Yufei Zhang
doaj   +1 more source

Transonic Buffet Suppression by Airfoil Optimization

open access: yesAerospace
The main buffet suppression techniques of aircrafts include active and passive flow control, aiming to reduce the impact of the fluctuating loads on the airfoil. These techniques are remedies after the airfoil design. The buffet suppression is not always
Yiming Gong   +2 more
doaj   +1 more source

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