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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F13%3A00392264%21RIV14-GA0-61388998
rdf:type
n20:Vysledek skos:Concept
dcterms:description
The evaluations of optical measurements of the flow field near the fluttering profile NACA0015 with two-degrees of freedom are presented. Mach number of the airflow was M = 0.21 and M = 0.45, the boundaries of the flutter occurrence. Aerodynamic forces acting on the profile were evaluated in the drag and lift components which enabled to obtain independently the forces corresponding to the upper and lower surfaces of the profile. Using the mentioned decomposition, the new information about mechanism of flutter properties was obtained. The force effects on the upper and lower surfaces are in opposite phases and they are partially eliminated as a result of the circulation around the profile. The cycle changes of this forces cause the permanent energy contribution from the airflow to the vibrating system. The evaluations of optical measurements of the flow field near the fluttering profile NACA0015 with two-degrees of freedom are presented. Mach number of the airflow was M = 0.21 and M = 0.45, the boundaries of the flutter occurrence. Aerodynamic forces acting on the profile were evaluated in the drag and lift components which enabled to obtain independently the forces corresponding to the upper and lower surfaces of the profile. Using the mentioned decomposition, the new information about mechanism of flutter properties was obtained. The force effects on the upper and lower surfaces are in opposite phases and they are partially eliminated as a result of the circulation around the profile. The cycle changes of this forces cause the permanent energy contribution from the airflow to the vibrating system.
dcterms:title
Unsteady aerodynamic forces measured on a fluttering profil Unsteady aerodynamic forces measured on a fluttering profil
skos:prefLabel
Unsteady aerodynamic forces measured on a fluttering profil Unsteady aerodynamic forces measured on a fluttering profil
skos:notation
RIV/61388998:_____/13:00392264!RIV14-GA0-61388998
n20:predkladatel
n21:ico%3A61388998
n3:aktivita
n19:P n19:I
n3:aktivity
I, P(GA13-10527S)
n3:dodaniDat
n10:2014
n3:domaciTvurceVysledku
n9:3369110 n9:4654862 n9:3033872
n3:druhVysledku
n15:D
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
112708
n3:idVysledku
RIV/61388998:_____/13:00392264
n3:jazykVysledku
n12:eng
n3:klicovaSlova
aeroelastic experiments; self-excited vibrations; fluttering profile; wind tunnel
n3:klicoveSlovo
n7:aeroelastic%20experiments n7:wind%20tunnel n7:fluttering%20profile n7:self-excited%20vibrations
n3:kontrolniKodProRIV
[B071F78CF3C2]
n3:mistoKonaniAkce
Svratka
n3:mistoVydani
Prague
n3:nazevZdroje
Engineering Mechanics 2013
n3:obor
n18:JU
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n11:GA13-10527S
n3:rokUplatneniVysledku
n10:2013
n3:tvurceVysledku
Kozánek, Jan Vlček, Václav Zolotarev, Igor
n3:typAkce
n16:EUR
n3:zahajeniAkce
2013-05-13+02:00
s:issn
1805-8256
s:numberOfPages
9
n13:hasPublisher
Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i.
n14:isbn
978-80-87012-47-5