transonic aircraft 中文意思是什麼
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Analysis study on transonic speed equal amplitude vibration of a certain type of aircraft
某型機跨音速等幅振動研究 -
Then the steady and unsteady subsonic, transonic and supersonic viscous flows around airfoil and some aircraft are numerically simulated. the 3 - dimensional unsteady navier - stokes equations are solved using the implicit lu - nnd algorithm, with baldwin - lomax turbulent model. on the basis of simulating unsteady viscous flow, coupling the structure dynamics equations, the problems of static aeroelasticity and flutter are investigated for wings and elevator
在模擬非定常粘性繞流的基礎上，與顫振運動方程相耦合，分別對機翼和全機流固耦合現象中顫振問題進行了研究，準確求解跨音速顫振臨界速度，分析機翼和全機的從亞音速到超音速范圍的顫振規律，並研究分析了機翼飛行迎角變化對顫振速度的影響。 -
Accurate calculation of aircraft steady and unsteady aerodynamics and flutter characteristics, especially in the transonic speed range is a crucial problem for aircraft designers. it is very important for us to develop an efficient, accurate, robust navier - stokes / euler flow solver that could be used to study transonic steady and unsteady flowfields
飛行器的定常和非定常氣動力的準確數值求解及顫振特性研究，特別是跨音速范圍內的準確數值求解及研究，一直以來都是飛行器設計工作者必須面對的重要研究難題。 -
The research of this dissertation is focused on how to simulate numerically the steady and unsteady subsonic, transonic and supersonic viscous flows around wing and aircraft by computational fluid dynamics method. on this basis, several kinds of aeroelastic problems of aircraft are investigated
本文的主要工作是利用計算流體力學（ cfd ）方法，數值模擬機翼和全機的定常及非定常粘性繞流，並在此基礎上耦合結構動力學方程研究了飛行器的多種氣動彈性問題。
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