유체역학 3판(한티미디어)chapter01

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유체역학 3판(한티미디어)chapter01에 대한 보고서 자료입니다.

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1.1 Conservation of mass — Mass — density
Newton’s second law — Momentum — velocity
The first law of thermodynamics — internal energy — temperature
1.2 a) density = mass/volume = M / L3
b) pressure = force/area = F / L ML / T L M / LT 2 = 2 2 = 2
c) power = force ´ velocity = F ´ L / T = ML / T ´ L / T = ML / T 2 2 3
d) energy = force ´ distance = ML / T L ML / T 2 ´ = 2 2
e) mass flux = rAV = M/L3 ´ L2 ´ L/T = M/T
f) flow rate = AV = L2 ´ L/T = L3/T
1.3 a) density =
M
L
FT L
L
FT L 3
2
3
2 4 /
= /
b) pressure = F/L2
c) power = F ´ velocity = F ´ L/T = FL/T
d) energy = F ´ L = FL
e) mass flux =
M
T
FT L
T
= = FT L
2 /
/
f) flow rate = AV = L2 ´ L/T = L3/T
1.4 (C) m = F/a or kg = N/m/s2 = N.s2/m.
1.5 (B) [m] = [t/du/dy] = (F/L2)/(L/T)/L = F.T/L2.
1.6 a) L = [C] T2. \\[C] = L/T2
b) F = [C]M. \\[C] = F/M = ML/T2 M = L/T2
c) L3/T = [C] L2 L2/3. \\[C] = L T L L L T 3 2 2 3 1 3 / × × / = /
Note: the slope S0 has no dimensions.
1.7 a) m = [C] s2. \\[C] = m/s2
b) N = [C] kg. \\[C] = N/kg = kg × m/s2× kg = m/s2
c) m3/s = [C] m2 m2/3. \\[C] = m3/s×m2× m2/3 = m1/3/s
1.8 a) pressure: N/m2 = kg × m/s2/m2 = kg/m× s2
b) energy: N× m = kg × m/s2 ´ m = kg× m2/s2
c) power: N× m/s = kg × m2/s3
d) viscosity: N× s/m2 =
kg m
s
s
1
m
kg / m s 2 2
× × = ×

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유체,   역학,   유체역학,   유체역학 3판(한티미디어)chapter01