例句與造句

1. The effect of reynolds number on rudder hydrodynamic performance is also analyzed . up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations , whereas stall angle , lift and drag beyond the stall angle are slightly under - predicted . the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces
   應(yīng)用所開發(fā)的求解器，以naca0015翼型舵為算例計算了船舵在不同雷諾武漢理三;大學(xué)博士學(xué)位論文數(shù)下大舵角范圍內(nèi)的三維粘性流場及水動力，成功地預(yù)報了舵的失速角和最大升力，并初步探討了雷諾數(shù)對舵水動力的影響;計算結(jié)果與現(xiàn)有試驗和計算數(shù)據(jù)比較，吻合程度相當好，初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。
2. Firstly , the airfoil ' s classic flutter ( at small attack angle ) , stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed . it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle , where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation . when the attack angle is far from the static stall angle , the vortex will have its own frequency , which differs from the natural frequency , and the flutter has the characteristic of forced oscillation
   首先研究了二維翼型的古典顫振(小攻角) 、失速顫振(失速攻角)和動力響應(yīng)問題(大攻角) ，得到以下結(jié)論：在靜態(tài)失速攻角附近的一定來流速度范圍內(nèi)，分離渦會發(fā)生頻率鎖定現(xiàn)象，分離流的頻率與固有頻率趨于相同，這時的振動呈現(xiàn)自激振動的特點；遠離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。
3. It's difficult to find stalling angle in a sentence. 用stalling angle造句挺難的