Measurements of a confined coaxial square jet

X. K. Wang, S. C.M. Yu, L. P. Chua

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review


The near field of a confined coaxial square jet configuration has been investigated using a Laser Doppler Anemometer. While most of the previous works concentrated on coaxial circular jet, the present work focuses on a square configuration, which stems from the fact that single non-circular nozzles have been shown to have better mixing characteristics than circular counterparts. The results are presented and discussed for various flow conditions, i.e., the velocity ratio between the inner and outer streams of the jet, γuu = Uo/Ui) at 0.5, 1.0 and 2.0, with a fixed initial velocity for the inner stream. The obtained data show that the mixing process is strongly affected by the initial velocity ratio γu- It is also revealed that the mean flow characteristics generally follow a similar trend as those of the previous investigations on coaxial circular jets. The axis-switching phenomenon has also been briefly discussed.

Original languageEnglish
Publication statusPublished - 2002
Externally publishedYes
Event40th AIAA Aerospace Sciences Meeting and Exhibit 2002 - Reno, NV, United States
Duration: 14 Jan 200217 Jan 2002


Conference40th AIAA Aerospace Sciences Meeting and Exhibit 2002
Country/TerritoryUnited States
CityReno, NV

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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