10.52 82d dx -f▣-e2x2 f=0X=0 -0 X→0 s26<1 e u■u"cos (k(x-ct)} 中dyk26H BULK [dy 、1■ =k26<1
10.52 2 x2 2 2 2 ef dx fd − −=−ε f = o x = o f→o x→∞ ε 2 << 1. ε 2 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ << π = 1 2 kH D H/ u = u o cos {k (x-ct)} 1 k dy dy 2 2 2 0 2 <<δ= ⎟ δ ⎠ ⎞ ⎜ ⎝ ⎛ δ ≅ Φ Φ ∫ ∫ δ Hk u Hu o o L/B BULK H o 1
C.V 2
2 C.V. g h H y x - δx
0+w0容 dr Ψ，z=vzF(n.). 3
z z r z z r r rr ∂ν ∂ν ∂ν ν ∂ ⎛ ⎞ ν +ν = ⎜ ⎟ ∂ ∂ ∂∂ ⎝ ⎠ z r 2 z 0 K 2 r dr ∞ =πν∫ ( ) p n r r,z z F( ), = z ψ =ν η η 3
Dz ,=0 R=8315 kl/kmol-K =/kmol-K C=293 kJ/kmol-K
4 P2 = 8 atm P1 = 1 atm T1 = 20°C V1 = 0 L = 50 m D = 25 cm : R = 8.315 kJ/kmol·K = 8.205x10-2 m3 ·atm/kmol·K Cp = 29.3 kJ/kmol·K
5
Nu=2h1_70=418 k17 6
2hH 70 Nu 4.118 k 17 = == φ cosθ 2 ⎟ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎜ ⎝ ⎛ ∞ += r a ru CYL 6