Results 21 to 30 of about 3,498,285 (189)

Efficient multi-objective shape optimization using proper orthogonal decomposition with variable fidelity concept

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
A variable fidelity concept is introduced in a re-parameterization approach based on the proper orthogonal decomposition (POD) to efficiently solve multi-objective aerodynamic shape optimization problems.
Wataru YAMAZAKI
doaj   +1 more source

Shape Optimization of an Asymmetric Airfoil for Low Wind Speed Region having Adjoint-Based Optimization Technique [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The land needed to install wind turbines is shrinking as power generation from renewable energy sources increases significantly. A large number of studies are being conducted to maximize the power extraction from wind turbines in areas with low wind ...
P. Shinde, S. S. Ohol, V. Tripathi
doaj   +1 more source

GCN-based 3D aerodynamic optimization design based on discrete adjoint method

open access: yesKongqi donglixue xuebao
Gradient-based optimization algorithms, particularly the discrete adjoint method, are widely used in aerodynamic shape optimization due to their independence from design variable dimensionality.
Dian Zhao, Jinpeng Xiang, Shufang Song
doaj   +1 more source

Uncertainty-Based Comprehensive Optimization Design for the Thermal Protection System of Hypersonic Wing Structure

open access: yesApplied Sciences, 2022
Due to the inherent uncertainties in material properties, loads, geometric dimensions, et al., the uncertainty-based optimization design method has become increasingly important for the design of the thermal protection system (TPS) by carefully ...
Ruixing Wang, Yan Luo
doaj   +1 more source

Multi-Objective Aerodynamic Optimization of the Streamlined Shape of High-Speed Trains Based on the Kriging Model. [PDF]

open access: yesPLoS ONE, 2017
Minimizing the aerodynamic drag and the lift of the train coach remains a key issue for high-speed trains. With the development of computing technology and computational fluid dynamics (CFD) in the engineering field, CFD has been successfully applied to ...
Gang Xu   +4 more
doaj   +1 more source

Aerodynamic design optimization using flow feature parameterization

open access: yes, 2007
Design optimization methods using high-fidelity computational fluid dynamics simulations are becoming increasingly popular in the area of aerodynamic design, sustaining the desire to make these methods more computationally efficient.
Barrett, Thomas Robin
core   +2 more sources

An optimization procedure of shape and position of the aerodynamic device at the rear side of a semi-trailer truck model

open access: yesHeliyon
The paper outlines the development and optimization of an aerodynamic device for a semi-trailer truck model to reduce aerodynamic drag force. The optimization procedure involves the selection of a basic aerodynamic device shape, using airfoil profiles ...
Stjepan Galamboš   +5 more
doaj   +1 more source

Design Exploration of the NACA Airfoil Family Using High-Fidelity CFD Analysis [PDF]

open access: yesINCAS Bulletin
As the aviation industry continues to prioritize sustainability, enhancing aerodynamic efficiency remains a central goal in reducing environmental impact.
Mihai-Vladut HOTHAZIE   +5 more
doaj   +1 more source

An Improved Multi-Objective Particle Swarm Optimization Method for Rotor Airfoil Design

open access: yesAerospace, 2023
In this study, a multi-objective aerodynamic optimization is performed on the rotor airfoil via an improved MOPSO (multi-objective particle swarm optimization) method.
Yongchuan Wu, Gang Sun, Jun Tao
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

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