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Aerodynamic Benefits by Optimizing Cycling Posture [PDF]

open access: yesApplied Sciences, 2022
An approach to aerodynamically optimizing cycling posture and reducing drag in an Ironman (IM) event was elaborated. Therefore, four commonly used positions in cycling were investigated and simulated for a flow velocity of 10 m/s and yaw angles of 0–20° using OpenFoam-based Nabla Flow CFD simulation software software.
Alois Schaffarczyk   +3 more
openaire   +4 more sources

Noise prediction research of a scaled turboprop aircraft

open access: yesXibei Gongye Daxue Xuebao, 2021
Aerodynamic noise level has become an important performance index of civil aircraft, and it is drawing more and more attention. Most airframe noise research based on CFD method is aimed at aircraft individual parts at present, while lack of noise ...
Song Minhua   +5 more
doaj   +1 more source

Airfoil Robust Optimization Based on Convolutional Neural Network and Polynomial Chaos Method

open access: yesHangkong gongcheng jinzhan, 2021
In conventional airfoil optimization design method, the aerodynamic performance of the optimal airfoil can deteriorate at the non-design point, so it is necessary to study the airfoil robust optimization method.An airfoil robustness design method based ...
GAO Yuan   +4 more
doaj   +1 more source

Two-stage aerodynamic optimization method based on early termination of CFD convergence and variable-fidelity model

open access: yesXibei Gongye Daxue Xuebao, 2021
Efficient aerodynamic design optimization method is of great value for improving the aerodynamic performance of little UAV's airfoil. Using engineering or semi-engineering estimation method to analyze aerodynamic forces in solving aerodynamic ...

doaj   +1 more source

High-dimensional aerodynamic data modeling using a machine learning method based on a convolutional neural network

open access: yesAdvances in Aerodynamics, 2022
Modeling high-dimensional aerodynamic data presents a significant challenge in aero-loads prediction, aerodynamic shape optimization, flight control, and simulation.
Bo-Wen Zan   +4 more
doaj   +1 more source

Multi-objective aerodynamic optimization of flying-wing configuration based on adjoint method

open access: yesXibei Gongye Daxue Xuebao, 2021
In order to solve the multi-objective multi-constraint design in aerodynamic design of flying wing, the aerodynamic optimization design based on the adjoint method is studied. In terms of the principle of the adjoint equation, the boundary conditions and

doaj   +1 more source

Quantitative Weight and Two-Particle Search Algorithm to Optimize Aero-Stealth Performance of a Backward Inclined Vertical Tail

open access: yesAerospace, 2023
To study the influence of the tilt-back design of a vertical tail on its aerodynamic stealth characteristics, an optimization method based on a quantitative weight coefficient and a two-particle search algorithm is presented.
Zeyang Zhou, Jun Huang
doaj   +1 more source

Multi-objective aerodynamic optimization design of high-speed maglev train nose [PDF]

open access: yesRailway Sciences, 2022
Purpose – The nose length is the key design parameter affecting the aerodynamic performance of high-speed maglev train, and the horizontal profile has a significant impact on the aerodynamic lift of the leading and trailing cars Hence, the study analyzes
Shuanbao Yao, Dawei Chen, Sansan Ding
doaj   +1 more source

Optimal design of watt six-bar transmission mechanism for morphing trailing edge [PDF]

open access: yesE3S Web of Conferences, 2021
The morphing trailing edge could realize a continuous smooth deformation compared with conventional trailing edge, which effectively improves the aerodynamic performance.
Zhou Jin, Zhao Shiwei
doaj   +1 more source

Multi-Objective Aerodynamic Optimization of a High-Speed Train Head Shape Based on an Optimal Kriging Model [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
An optimal Kriging surrogate model based on a 5-fold cross-validation method and improved artificial fish swarm optimization is developed for improving the aerodynamic optimization efficiency of a high-speed train running in the open air.
Y. Yang, Z. He, Z. Shi, X. H. Xiong
doaj   +1 more source

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