Flow Visualization and Analysis of the Structures on Two Opposed Supersonic Free Jets by LIF Method

The structures of two opposed supersonic argon free jets with different source pressures are studied by flow visualization using laser-induced fluorescence of iodine molecules seeded in argon. The ratio between source pressures is kept at 2.0. Experiments are carried out for various source pressures...

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Bibliographic Details
Published inNihon Kikai Gakkai rombunshuu. B hen Vol. 57; no. 539; pp. 2233 - 2238
Main Authors NI-IMI, Tomohide, FUJIMOTO, Tetsuo, HARA, Yutaka, IJIMA, Kenichi
Format Journal Article
LanguageJapanese
English
Published The Japan Society of Mechanical Engineers 1991
Subjects
Interaction
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Summary:The structures of two opposed supersonic argon free jets with different source pressures are studied by flow visualization using laser-induced fluorescence of iodine molecules seeded in argon. The ratio between source pressures is kept at 2.0. Experiments are carried out for various source pressures and various ratios of the source pressure to the pressure of the expansion chamber. Characteristic structures of the flow field are classified roughly into four types depending on the condition of the source pressures and the pressure of the expansion chamber. Specifically, an unstable flow in the interacting region is found. The pressure condition is examined for each type of flow field.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.57.2233