Flowfield characteristics of a hypermixer interacting with transverse injection in supersonic flow

Chae Hyoung Kim, In Seuck Jeung, Byungil Choi, Toshinori Kouchi, Goro Masuya

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nonreacting experiments were conducted at Mach 2 to understand the relationship between a wall-mounted alternating-ramp-wedge-type hypermixer and transverse injection compared with a step mixer. Experimental techniques such as schlieren visualization and stereoscopic particle image velocimetry were employed to study the three-dimensional flowfield with vortex structures induced by the interaction between the mixer and transverse injection. Without injection, the hypermixer creates a region that contains vortical motions. When a transverse jet is injected in the vortical region, flow parameters on mixing performance, such as the penetration height, vorticity, and turbulent stress, are improved. Three turbulent-stress components show relatively distinct distributions, and strong turbulent stresses are observed at the upper side of the jet plume. Turbulent-stress distributions are significantly associated with strain rate, which peaks along the sonic line of the jet plume.

Original languageEnglish
Pages (from-to)1742-1753
Number of pages12
JournalAIAA Journal
Volume50
Issue number8
DOIs
Publication statusPublished - Aug 2012
Externally publishedYes

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Supersonic flow
Vorticity
Velocity measurement
Mach number
Stress concentration
Strain rate
Vortex flow
Visualization
Experiments

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Flowfield characteristics of a hypermixer interacting with transverse injection in supersonic flow. / Kim, Chae Hyoung; Jeung, In Seuck; Choi, Byungil; Kouchi, Toshinori; Masuya, Goro.

In: AIAA Journal, Vol. 50, No. 8, 08.2012, p. 1742-1753.

Research output: Contribution to journalArticle

Kim, Chae Hyoung ; Jeung, In Seuck ; Choi, Byungil ; Kouchi, Toshinori ; Masuya, Goro. / Flowfield characteristics of a hypermixer interacting with transverse injection in supersonic flow. In: AIAA Journal. 2012 ; Vol. 50, No. 8. pp. 1742-1753.
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