Re: [問題] Kutta Condition

看板Aviation (航空板)作者weifengyi (FL350)時間17年前 (2007/07/26 20:22)推噓1(1推 0噓 1→)

留言2則, 1人參與討論串1/1

※ 引述《britvic (fly high)》之銘言： : 想請問大家問題 : 我查了一下網路上關於Kutta condition的資料是寫說 : "The Kutta condition is an impirical rule, based on experimental observation : and validation of mathematical models, and it dates to 1902 when W.M. Kutta : proposed it. He states: : The flow leaves a sharp trailing edge of an aerofoil smoothly and the : velocity in this region is finite. : This means that: : * the velocities at the trailing edge on the upper and lower surfaces are : identical (both magnitude and direction); : * the pressure difference between the upper and lower surfaces vanishes : at the trailing edge" : 上面最後四行寫的應該是 : "在機翼後緣的上表面和下表面速度是一樣的，也不會有壓力差" : 我想問的是 : Kutta condition對升力會造成什麼影響？？ : 有人可以解答我的疑惑嗎？謝謝！！！庫塔效應我想應該指的是流過上翼面的氣流跟流過下翼面在翼的尾端tailing edge要同時到達而因為在飛機的起降階段襟翼flap會伸出這時候氣流流過上翼面的路徑變長而要符合庫塔效應的情況之下流過上翼面的氣流速度就要變快這時候上翼面因為白努力現象壓力變的更小所以上下翼面所產生的壓力差更大這時候升力就變的更大了有錯誤的話請其他先進指正唷謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.62.44.26