Uncertainty propagation in aerodynamic forces and heating analysis for hypersonic vehicles with uncertain-but-bounded geometric parameters
Sign Up to like & getrecommendations! Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.02.028
Abstract: Abstract In this study, uncertainties in aerodynamic forces and heating properties of hypersonic vehicles are calculated and analyzed with consideration of uncertain-but-bounded geometric parameters. The aerodynamic shape of a hypersonic vehicle is created with a… read more here.
Keywords: heating properties; method; geometric parameters; hypersonic vehicles ... See more keywords
Aerodynamic periodicity of transient aerodynamic forces of flexible plunging airfoils
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2020.09.054
Abstract: Abstract For flapping micro-air vehicles, periodical aerodynamics in every plunging period is always desired in the design of aircraft controlling system. During the periodic plunges of rigid airfoil, either periodical or non-periodical aerodynamic forces can… read more here.
Keywords: periodicity transient; periodicity; aerodynamic periodicity; transient aerodynamic ... See more keywords
Characteristics of local wind pressure distribution and global aerodynamic forces on a vertical forest
Sign Up to like & getrecommendations! Published in 2019 at "Ecological Engineering"
DOI: 10.1016/j.ecoleng.2019.07.015
Abstract: Abstract Vertical forests comprise of high-rise buildings with trees planted on their balconies. When trees are planted on a building, they change its exterior, and may influence local wind pressure and global aerodynamic forces. Wind-borne… read more here.
Keywords: wind pressure; global aerodynamic; local wind; pressure ... See more keywords
Strategy for the determination of unsteady aerodynamic forces on elongated bodies in grid-generated turbulent flow
Sign Up to like & getrecommendations! Published in 2020 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2019.109939
Abstract: Abstract In this study, we developed a general method for estimating the unsteady aerodynamic forces on elongated bodies in grid-generated turbulent flow. The key to this method is the identification of the one-wavenumber aerodynamic transfer… read more here.
Keywords: unsteady aerodynamic; forces elongated; elongated bodies; turbulent flow ... See more keywords
Aerodynamic forces acting on birds during flight: A comparative study of a shorebird, songbird and a strigiform
Sign Up to like & getrecommendations! Published in 2020 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2019.110018
Abstract: Abstract The flapping wing is one of the most widespread propulsion methods found in nature. The current study focuses on the estimation of unsteady aerodynamic forces on freely flying birds through analysis of wingbeat kinematics… read more here.
Keywords: birds flight; study; flight; aerodynamic forces ... See more keywords
Steady and unsteady aerodynamic forces on a long-span membrane structure
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Wind Engineering and Industrial Aerodynamics"
DOI: 10.1016/j.jweia.2019.06.018
Abstract: Abstract This paper reports the steady and unsteady (motion-induced) aerodynamic forces on long-span roofs based on computational fluid dynamics (CFD) analysis with a large eddy simulation (LES). Three types of roofs, i.e., flat, cylindrical, and… read more here.
Keywords: long span; forces long; steady unsteady; roof ... See more keywords
Winged forelimbs of the small theropod dinosaur Caudipteryx could have generated small aerodynamic forces during rapid terrestrial locomotion
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-35966-4
Abstract: Pennaceous feathers capable of forming aerodynamic surfaces are characteristic of Pennaraptora, the group comprising birds and their closest relatives among non-avian dinosaurs. However, members of the basal pennaraptoran lineage Oviraptorosauria were clearly flightless, and the… read more here.
Keywords: rapid terrestrial; could generated; aerodynamic forces; pennaceous feathers ... See more keywords
Numerical study of transient aerodynamic forces acting on a ski jumper considering dynamic posture change from takeoff to landing.
Sign Up to like & getrecommendations! Published in 2022 at "Sports biomechanics"
DOI: 10.1080/14763141.2022.2154256
Abstract: This study was designed to develop a computational fluid dynamics (CFD) method for unsteady analysis of a series of ski jump movements with attitude changes, and to analyse the aerodynamic characteristics of an expert jumper… read more here.
Keywords: forces acting; posture; aerodynamic forces; expert jumper ... See more keywords
A chordwise offset of the wing-pitch axis enhances rotational aerodynamic forces on insect wings: a numerical study
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the Royal Society Interface"
DOI: 10.1098/rsif.2019.0118
Abstract: Most flying animals produce aerodynamic forces by flapping their wings back and forth with a complex wingbeat pattern. The fluid dynamics that underlies this motion has been divided into separate aerodynamic mechanisms of which rotational… read more here.
Keywords: pitch; motion; axis; wing pitch ... See more keywords
Unsteady and nonlinear aerodynamic prediction of airfoil undergoing large-amplitude pitching oscillation based on gated recurrent unit network
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/09544100221097521
Abstract: In this paper, a reduced-order model (ROM) based on data-driven machine learning algorithm is constructed to identify the aerodynamic forces of airfoil undergoing large-amplitude pitching oscillation. Strong nonlinearity and unsteadiness in aerodynamics is a major… read more here.
Keywords: rom; airfoil undergoing; undergoing large; large amplitude ... See more keywords
Characterization of Aerodynamic Forces on Wings in Plunge Maneuvers
Sign Up to like & getrecommendations! Published in 2020 at "AIAA Journal"
DOI: 10.2514/1.j059689
Abstract: We present experiments and simulations of plunging maneuvers of large amplitude, for velocity ratios of G=1 and 2, defined as the ratio between the peak plunge velocity and the freestream velocity.... read more here.
Keywords: wings plunge; forces wings; aerodynamic forces; characterization aerodynamic ... See more keywords