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신정관,박종일,이한영,김경훈 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-
The structure of the turbulent wall layer developing into flow separation was studied. The experiments were performed to find out the formation of turbulent separation lead to diverging of the diffuser wall in a two-dimensional asymmetric diffuser which was attached to a downstream end of a long straight channel to provide a fully-developed turbulent inlet condition. First report, this is to estimate how to develop the region of the separation in the smooth diffuser wall with diverging condition and then is the reference on the characteristics of rough diffuser wall being under discussion at second report. As a result, static pressure profile of the fixed wall are in accord with the static pressure profire of the movable wall. Separation has broken out at the diffuser open angle θ=7o, while the diffuser openingangle is increasing, the region of the separation is advanced at the upstream and separation appears at the diffuser open angle θ=12o in the fixed wall too.