北京航空航天大学学报
北京航空航天大學學報
북경항공항천대학학보
2001年
1期
51-53
,共3页
涡旋流动%流动显示%喷流试验%双三角翼绕流%流动控制
渦鏇流動%流動顯示%噴流試驗%雙三角翼繞流%流動控製
와선류동%류동현시%분류시험%쌍삼각익요류%류동공제
流动显示结果表明，喷流能有效地推迟双三角翼前缘涡的破裂，且随着攻角的增大，前缘涡破裂位置逐渐推后，喷流极大地改善了大攻角情况下前缘涡的非对称破裂特性，能有效地克服可能出现的机翼的“摇滚”现象.另外，后缘喷流可以减弱乃至消除前缘涡混掺现象的发生，进而有利于飞行器的操纵.
流動顯示結果錶明，噴流能有效地推遲雙三角翼前緣渦的破裂，且隨著攻角的增大，前緣渦破裂位置逐漸推後，噴流極大地改善瞭大攻角情況下前緣渦的非對稱破裂特性，能有效地剋服可能齣現的機翼的“搖滾”現象.另外，後緣噴流可以減弱迺至消除前緣渦混摻現象的髮生，進而有利于飛行器的操縱.
류동현시결과표명，분류능유효지추지쌍삼각익전연와적파렬，차수착공각적증대，전연와파렬위치축점추후，분류겁대지개선료대공각정황하전연와적비대칭파렬특성，능유효지극복가능출현적궤익적“요곤”현상.령외，후연분류가이감약내지소제전연와혼참현상적발생，진이유리우비행기적조종.
The flow visualization techniques has been used to investigate the effects of trailing-edge jets on the leading-edge vortex breakdown and its control of flow over a 76°/40° double Delta wing. The experimental results indicate that the trailing-edge jets can delay the leading-edge vortex breakdown efficiently, and this delay increases with the angle of attack. The trailing-edge jets can greatly improve the asymmetrical characteristics of the leading-edge vortex breakdown at large angle of attack, and the possible occurrence of “rock” phenomenon may be overcome. In addition, the trailing-edge jets may weaken or even eliminate the mixing phenomenon of the leading-edge vortex, which is in advantage of the flight control of aircraft.
