側壁に付着する超音速不足膨張噴流の流動特性

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  • Flow Characteristics of Supersonic Under-expanded Jet Reattaching to Side Wall

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<p>When a jet is near a solid wall, it deflects and flows while being attached to the wall owing to the Coanda effect. The flow characteristics of two-dimensional (2D) Coanda-reattached jet flows have been elucidated considerably owing to the development of fluidics. However, supersonic under-expanded jets reattached to side walls have not been sufficiently investigated. In this study, the flow characteristics of a supersonic under-expanded Coanda air jet from a 2D nozzle that reattaches to an offset side wall are elucidated through experimental and numerical analyses. That is, the effects of supplied pressure P0 on the flow characteristics such as the flow pattern, size of shock cell, reattachment distance, and velocity and pressure distributions, etc. are examined. The flow pattern was visualized by Schlieren method and the velocity distribution was measured by a Pitot tube. P0 was changed from 0.2 MPa to 0.5 Mpa.</p>

収録刊行物

  • 年次大会

    年次大会 2020 (0), S05105-, 2020

    一般社団法人 日本機械学会

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