한국가시화정보학회:학술대회논문집
- 한국가시화정보학회 2003년도 추계학술대회 논문집
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- Pages.39-42
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- 2003
Dynamic Stereo PIV에 의한 델타형 날개에서의 3차원 와류 유동에 관한 연구
Three Dimensional Vortex Behavior of LEX Delta Wing by Dynamic Stereo PIV
초록
Leading edge extension(LEX) in a highly swept shape applied to a delta wing features the modern air-fighters. The LEX vortices generated upon the upper surface of the wing at high angle of attack enhance the lift force of the delta wing by way of increased negative suction pressure over the surfaces. The present 3-D stereo PIV includes the Identification of 2-D cross-correlation equation, stereo matching of 2-D velocity vectors of two cameras, accurate calculation of 3-D velocity vectors by homogeneous coordinate system, removal of error vectors by a statistical method followed by a continuity equation criterion and so on. A delta wing model with or without LEX was immersed in a circulating water channel. Two high-resolution, high-speed digital cameras
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