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Titolo:
Arrangement and dynamic behavior of vortices from a pitching airfoil
Autore:
Fuchiwaki, M; Tanaka, K;
Indirizzi:
Kyushu Inst Technol, Dept Mech Syst Engn, Iizuka, Fukuoka 8208502, Japan Kyushu Inst Technol Iizuka Fukuoka Japan 8208502 , Fukuoka 8208502, Japan
Titolo Testata:
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
fascicolo: 3, volume: 43, anno: 2000,
pagine: 443 - 448
SICI:
1340-8054(200008)43:3<443:AADBOV>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-REYNOLDS-NUMBER;
Keywords:
unsteady flow; separation; flow visualization; shear flow; vortex Schlieren method; pitching airfoil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Fuchiwaki, M Kyushu Inst Technol, Dept Mech Syst Engn, 680-4 Kawazu, Iizuka, Fukuoka 8208502, Japan Kyushu Inst Technol 680-4 Kawazu Iizuka Fukuoka Japan 8208502
Citazione:
M. Fuchiwaki e K. Tanaka, "Arrangement and dynamic behavior of vortices from a pitching airfoil", JSME I J B, 43(3), 2000, pp. 443-448

Abstract

Dynamic behavior of vortices generated behind the leading and trailing edges of pitching airfoils such as two kinds of flat plates, NACA0010, 0020, 65-0910 and an airfoil with a blunt trailing edge has been visualized using a schlieren technique with a high-speed camera in a wind tunnel. It was observed that small vortices were shed discretely from the leading and trailing edges. The frequency of vortex shedding was strongly dependent on the nondimensional pitching rate and was independent of the airfoil configuration as well as the Reynolds number. The frequency of vortex shedding from the respective edge during one pitching cycle was the same and this result was observed similarly among all the test airfoils. Vortices existed which movedup from the trailing edge toward the leading edge on the suction surface and they played an important role in balancing the frequency of vortex shedding from the respective edge.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/05/20 alle ore 12:13:25