Results 11 to 20 of about 12,489,898 (339)

Learning the aerodynamic design of supercritical airfoils through deep reinforcement learning [PDF]

open access: yesAIAA Journal, 2020
The aerodynamic design of modern civil aircraft requires a true sense of intelligence since it requires a good understanding of transonic aerodynamics and sufficient experience.
Runze Li, Yufei Zhang, Haixin Chen
semanticscholar   +1 more source

Laminar-turbulent transition characteristics of a 3-D wind turbine rotor blade based on experiments and computations [PDF]

open access: yesWind Energy Science, 2020
Laminar-turbulent transition behavior of a wind turbine blade section is investigated in this study by means of field experiments and 3-D computational fluid dynamics (CFD) rotor simulations.
Ö. S. Özçakmak   +3 more
doaj   +1 more source

Aerodynamic Design Optimization of a Morphing Leading Edge and Trailing Edge Airfoil–Application on the UAS-S45

open access: yesApplied Sciences, 2021
This work presents an aerodynamic optimization method for a Droop Nose Leading Edge (DNLE) and Morphing Trailing Edge (MTE) of a UAS-S45 root airfoil by using Bezier-PARSEC parameterization.
M. Bashir   +3 more
semanticscholar   +1 more source

Review of the Study on High-angle-of-attack Flight Problems of Aircraft

open access: yesHangkong gongcheng jinzhan, 2022
The close combat in air battle is still inevitable in future.The accurate and agile nose-pointing capability at high-angle-of-attack is still essential and significant for fighter to survive and gain air superiority.According to the high-angle-of-attack ...
ZHANG Zijun   +3 more
doaj   +1 more source

A High Efficient Fluid-Structure Interaction Method for Flutter Analysis of Mistuned [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The time cost is very high by direct fluid-structure interaction method for mistuned bladed disk structures, so aerodynamic loads generally are ignored or treated as small perturbations in traditional flutter analysis.

doaj   +1 more source

Numerical simulation study on dynamic stall of airfoil controlled by combined blow-suction

open access: yesHangkong gongcheng jinzhan, 2023
One of the key problems to improve the aerodynamic characteristics of airfoil is to solve the dynamic stall.This paper presents a method to control the dynamic stall of airfoil by using the combination of leading-edge suction and trailing edge suction ...
JIA Tianhao   +3 more
doaj   +1 more source

An improved WENO-Z scheme with symmetry-preserving mapping

open access: yesAdvances in Aerodynamics, 2020
Since the classical weighted essentially non-oscillatory (WENO) scheme is proposed, various improved versions have been developed, and a typical one is the WENO-Z scheme.
Zheng Hong, Zhengyin Ye, Kun Ye
doaj   +1 more source

An efficient geometric constraint handling method for surrogate-based aerodynamic shape optimization

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Handling a large number of geometric constraints brings a big challenge to the surrogate-based aerodynamic shape optimization (ASO) driven by computational fluid dynamics (CFD).
Kai Wang   +3 more
doaj   +1 more source

Parameter-Based Design and Analysis of Wind Turbine Airfoils with Conformal Slot Co-Flow Jet [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
A co-flow jet (CFJ), an active flow control method combining blowing and suction control, can effectively suppress the stall of airfoils. However, the streamwise jet channel along the upper surface of a conventional CFJ airfoil reduces the thickness and ...
C. Y. Ma, H. Y. Xu
doaj   +1 more source

Influence of the Blunt Trailing-Edge Thickness on the Aerodynamic Characteristics of the Very Thick Airfoil

open access: yesWind, 2023
In this paper, the NWT600 airfoil with a thickness ratio of 60% is taken as the research object. The aerodynamic performance of the airfoil is analyzed by experiments and numerical simulations.
Zhen Pei   +3 more
doaj   +1 more source

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