J-GLOBAL ID:200904052400656133  Research Project code:9800036319 Update date:Feb. 17, 2003

Study on self-excited oscillation performance of the interference flow between collision wave and barrier layer

Study period:1994 - 1996
Research overview:
Self-excited microoscillation are often observed in a flow site, including exfoliation, which is caused by the interference between collision waves and a barrier layer developed on the surface of a body at a supersonic speed, but the elucidation of the retention mechanism and nonstationary characteristics of the oscillation is not satisfactory yet. Using a compact supersonic wind tunnel, this study measures the changes in the positions of pressure oscillation and collision waves in a flow site where there is interference between collision waves and a barrier layer and adjusts a device to detect the position of present collision waves with the purpose of experimental study of aerodynamic mechanism which retains self-excited microoscillation and nonstationary characteristics.
Keywords (10):
supersonic ,  self-induced ,  shock ,  boundary ,  aerodynamic ,  supersonic ,  wind ,  pressure ,  detector ,  exfoliation
Research program: Ordinary Research
Ministry with control over the research :
Ministry of Education, Culture, Sports, Science and Technology

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