110年 - 110 國立清華大學碩士班考試入學試題_工程與系統科學系/乙組:流體力學#104987

1.解釋名詞(25%) (1)Largrangian Method and Eulerian Method

1.解釋名詞(25%) (3)舉出如何判定流況已達 fully developed condition

1.解釋名詞(25%) (4)Major loss and Minor loss

1.解釋名詞(25%) (5)boundary layer thickness and momentum thickness

2. (20%)
試畫出Moody chart(儘量詳細),並解釋圖上每一個參數以及Moody chart的用途

3.(15%)
Describe and derive the Reynolds Transport Theorem(詳細推導過程)

4. (20%) For a horizontal T through which water (density = 1000 kg/m3) is flowing, the following data are given: Q₁-=0.25 m³/s, Q2=0.1 m³/s, p₁=100 kpa, p₂=70 kpa, p₃=80 kpa, D₁=15 cm, D₂=7 cm, and D₃=15 cm. For these conditions, what external forcein the x-y plane (through the supporting devices) is needed to hold this T in place?

(a) Show that this profile satisfies the appropriate boundary conditions for the boundary layer;

(b) Use the momentum integral equation to determine the boundary thickness, δ

110年 - 110 國立清華大學碩士班考試入學試題_工程與系統科學系/乙組:流體力學#104987

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