Measurement of flow field produced by ramp vortices and twin swirl jets

Shunsuke Koike; Takashi Ito; Keiko Hirose; Mitsutomo Hirota; Kenichi Takita; Goro Masuya

Measurement of flow field produced by ramp vortices and twin swirl jets

Shunsuke Koike, Takashi Ito, Keiko Hirose, Mitsutomo Hirota, Kenichi Takita, Goro Masuya

ENG - Graduate School of Engineering (Common)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.

Original language	English
Title of host publication	A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
Pages	917-926
Number of pages	10
Publication status	Published - 2005 Dec 21
Event	13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference - Capua, Italy Duration: 2005 May 16 → 2005 May 20

Publication series

Name	A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
Volume	2

Conference

Conference	13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
Country	Italy
City	Capua
Period	05/5/16 → 05/5/20

ASJC Scopus subject areas

Engineering(all)

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Koike, S., Ito, T., Hirose, K., Hirota, M., Takita, K., & Masuya, G. (2005). Measurement of flow field produced by ramp vortices and twin swirl jets. In A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference (pp. 917-926). (A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference; Vol. 2).

Measurement of flow field produced by ramp vortices and twin swirl jets. / Koike, Shunsuke; Ito, Takashi; Hirose, Keiko; Hirota, Mitsutomo; Takita, Kenichi; Masuya, Goro.

A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference. 2005. p. 917-926 (A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Koike, S, Ito, T, Hirose, K, Hirota, M, Takita, K & Masuya, G 2005, Measurement of flow field produced by ramp vortices and twin swirl jets. in A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference. A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference, vol. 2, pp. 917-926, 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference, Capua, Italy, 05/5/16.

Koike S, Ito T, Hirose K, Hirota M, Takita K, Masuya G. Measurement of flow field produced by ramp vortices and twin swirl jets. In A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference. 2005. p. 917-926. (A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference).

Koike, Shunsuke ; Ito, Takashi ; Hirose, Keiko ; Hirota, Mitsutomo ; Takita, Kenichi ; Masuya, Goro. / Measurement of flow field produced by ramp vortices and twin swirl jets. A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference. 2005. pp. 917-926 (A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference).

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abstract = "Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.",

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AU - Masuya, Goro

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N2 - Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.

AB - Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.

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