HintsFluidMechanics

# HintsFluidMechanics - Hints for Fluid Mechanics Questions...

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Hints for Fluid Mechanics Questions : Q2.1 (b) K= ρ dp/d ρ , ρ =( ρ 1 + ρ 2 )/2, dp=p 2 -p 1 = ρ gz, d ρ = ρ 2 - ρ 1 Q2.2 P abs = P gau + P atm Q2.3 p= ρ gh Q2.4 1 bar = 10 5 Nm -2 Q2.5 p= ρ gh Q2.6 p=F/A Q2.7 p= ρ gh, consider buoyancy effect Q2.8 p= ρ gh, 1 bar = 10 5 Nm -2 Q2.9 p= ρ gh, 1 bar = 10 5 Nm -2 Q2.10 p= ρ gh Q2.12 F=pA, p= ρ gh Q2.17 P abs = P gau + P atm Q2.18 U-tube manometer eqn Q2.19 inverted U-tube manometer eqn Q2.20 p 1 -p 2 = ρ g(z+y), y=x(d/D) 2 , x=z/sin θ , correct answer is 7.59 ° Q2.21 y=x(d/D) 2 , z=xsin θ Q2.22 y=x(d/D) 2 Q2.23 acceleration should read 4ms -2 not 4ms -1 , p= ρ gh(1+a/g) Q2.24 z=( ρϖ 2 r 2 )/(2g)+z 0 ; when r=0, z=z 0 Find z 0 first by h R rdr z R = 1 0 2 2 π 1 = 0.0125m = 2 0 2 R rdr p F where R 2 = 0.25m Q3.1 R= ρ gAŷ, D=sin 2 φ (k G 2 /ŷ)+ŷ Q3.2 R= ρ gAŷ Q3.3 ŷ=4R/(3 π ), 72 ) 64 9 ( 4 2 R I G - = , D=sin 2 φ (k G 2 /ŷ)+ŷ Q3.4 I G = π r 4 /4, R= ρ gAŷ, D=sin 2 φ (k G 2 /ŷ)+ŷ Q3.5

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HintsFluidMechanics - Hints for Fluid Mechanics Questions...

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