PIV measurement of single-port and twin-port injection in supersonic flow

Mitsutomo Hirota, Shunsuke Koike, Koichi Tanaka, Kenichi Takita, Goro Masuya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Flush-wall, single-port and twin-port injections into supersonic flow were investigated experimentally to detail the formation process of a streamwise vortex. A suction-type, supersonic wind tunnel was used. Unheated atmospheric air was ingested into a vacuum tank through a two-dimensional contoured nozzle and a test section. The jet injection angle was 15 degrees. The mainstream Mach number was 2.4. Velocity distributions were measured with Particle Image Velocimetry (PIV). The Mie scattering method was also used. The results revealed that the incoming mainstream flow from behind the jet formed a streamwise vortex near the injection port. This vorticity pair was caused by the difference between jet and mainstream velocity. Its high elliptical vorticity regions rotated to the downstream; then, these regions existed parallel with the mainstream. When the distance between the centers of the twin-port injection holes was 2.6 times the diameter of the injection hole, twin-port injection reduced these vortex widths to the downstream because of the interaction of the inside vortex.

Original languageEnglish
Title of host publicationICIASF'05 Record - 21st International Congress on Instrumentation in Aerospace Simulation Facilities, 2005
Pages330-336
Number of pages7
Publication statusPublished - 2005 Dec 1
Event21st International Congress on Instrumentation in Aerospace Simulation Facilities, 2005, ICIASF'05 - Sendai, Japan
Duration: 2005 Aug 292005 Sep 1

Publication series

NameICIASF Record, International Congress on Instrumentation in Aerospace Simulation Facilities
Volume2005
ISSN (Print)0730-2010

Conference

Conference21st International Congress on Instrumentation in Aerospace Simulation Facilities, 2005, ICIASF'05
CountryJapan
CitySendai
Period05/8/2905/9/1

ASJC Scopus subject areas

  • Instrumentation
  • Aerospace Engineering
  • Condensed Matter Physics

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