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49.有關邊界層之敘述,下列何者錯誤?(A)水流流經一固體邊界時會產生邊界層(B)邊界層的厚度常定義為局部流速達到自由流速之 0.99 倍處(C)邊界層可分為層流邊界層及紊流邊界層(D)均勻流流過一平
問題詳情
49.有關邊界層之敘述,下列何者錯誤?
(A)水流流經一固體邊界時會產生邊界層
(B)邊界層的厚度常定義為局部流速達到自由流速之 0.99 倍處
(C)邊界層可分為層流邊界層及紊流邊界層
(D)均勻流流過一平板時,層流邊界層之厚度比紊流邊界層大
參考答案
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48.描述物體運動問題之座標常用 Lagrangian 座標與 Eulerian 座標。請問下列敘述何者錯誤?(A) Lagrangian 座標將物理特性僅視為時間的函數(B) Lagrangian
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