论文信息 - Study of slanted perforated shapes in tabs for control of subsonic Jets

Study of slanted perforated shapes in tabs for control of subsonic Jets

Flowfield characteristics of correctly expanded subsonic and sonic jets from uncontrolled nozzle and jet with plain solid tab were compared with jet having slanted perforated tabs of different shapes. The jet with tab of slanted perforation angles of 30 0 of circular, elliptical in horizontal and vertical major axis and square shape were used for the experiment. Detailed Pitot pressure measurements revealed that the slanted perforation in the tab had a strong influence on the emerging flowfield. The tab with 30 0 slanted perforation of circular shape was found to be more efficient in disturbing the potential core in subsonic jets when compared with solid tab and other shapes of perforation in tabs considered. It was also found that it was having a slightly lesser potential core as compared to jet with solid tab.

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