Computational Fluid Mechanics and Heat Transfer Third Edition 6 doc

... mass transfer with counterdiffusion 64 8 11.8 Mass transfer coefficients at high rates of mass transfer . 65 4 11.9 Simultaneous heat and mass transfer 66 3 Problems 67 3 References 68 5 VI Appendices 68 9 A ... compositions and species fluxes 60 0 11.3 Diffusion fluxes and Fick’s law 60 8 11.4 Transport properties of mixtures 61 4 11.5 The equation of species conservation...

Ngày tải lên: 21/06/2014, 22:20

... Θ tip = cosh 0 +(0.0 468 /0. 865 6) sinh 0 cosh(0. 865 6) +(0.0 468 /0. 865 6) sinh(0. 865 6) = 1 1.39 86 +0.0529 = 0 .68 86 so the exact tip temperature is T tip = T ∞ +0 .68 86( T 0 −T ∞ ) = 26 + 0 .68 86( 150 − 26) = 111.43 ◦ C §4.3 ... From Example 4.8 we have mL = 0. 865 6 and hr/k = 120(0.010)/205 = 0.005 86. Then, with mr = mL(r /L), we have (mr ) tanh(mL) = 0. 865 6(0.010/0.080)...

Ngày tải lên: 21/06/2014, 22:20

... 0.9771 1.422 46 1. 267 3 0.9727 1.79058 1. 364 0 0.9739 1.50 0.98824 1.1537 0.9748 1.4 569 5 1.2807 0. 969 6 1.8 366 0 1.3850 0.9707 1 .60 1.00842 1.1593 0.97 26 1.48917 1.2934 0. 966 5 1.879 76 1.4052 0. 967 4 1.80 ... 1.044 86 1. 169 5 0. 968 0 1.54 769 1.3170 0. 960 1 1.95857 1.44 36 0. 960 5 2.00 1.0 768 7 1.1785 0. 963 5 1.59945 1.3384 0.9537 2.028 76 1.4793 0.9534 2.20 1.10524 1.1...

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... 0.0 563 7 0.94 363 1.20 0.91031 0.08 969 0.10 0.112 46 0.88754 1.30 0.93401 0. 065 99 0.15 0. 168 00 0.83200 1.40 0.95229 0.04771 0.20 0.22270 0.77730 1.50 0. 966 11 0.03389 0.30 0.32 863 0 .67 137 1 .60 0.9 763 5 ... 0 .67 137 1 .60 0.9 763 5 0.02 365 0.40 0.42839 0.57 161 1.70 0.98379 0.0 162 1 0.50 0.52050 0.47950 1.80 0.98909 0.01091 0 .60 0 .60 3 86 0.3 961 4 1.8214 0.99000 0.01000 0...

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... 0.32301 2.00 0 .65 003 0 .62 977 0.304 76 0. 266 75 3.00 1.3 968 2 0.8 460 5 0.57 067 0. 161 36 4.00 2.305 76 0.95552 0.758 16 0. 064 24 4.918 3.20 169 0.99000 0.83344 0.01837 6. 00 4.27 964 0.99898 0.85712 0.00240 8.00 6. 27923 ... 0.00000 0.00000 0.332 06 0.20 0.0 066 4 0. 066 41 0.00332 0.33199 0.40 0.0 265 6 0.13277 0.01322 0.33147 0 .60 0.05974 0.19894 0.02981 0.33008 0.80 0.1 061...

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... 1 .64  −2 = 0.0 264 6 and the Nusselt number is found with Gnielinski’s equation, (7.43) Nu D h = (0.0 264 6/8)(19, 011 − 1, 000)(0.713) 1 + 12.7  0.0 264 6/8  (0.713) 2/3 −1  = 49.82 The heat transfer ... approximations as were made in deriving the energy equa- tion in Sect. 6. 3. §7.4 Heat transfer surface viewed as a heat exchanger 367 and Lyon [7.21] recommends the fol...

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... Viscous Fluid Flow. McGraw-Hill Book Company, New York, 1974. [7.2] S. S. Mehendale, A. M. Jacobi, and R. K. Shah. Fluid flow and heat transfer at micro- and meso-scales with application to heat ... 411 and Pr = 0.711, where the properties are evaluated at 300 K = 27 ◦ C. Then, from eqn. (8. 26) , Nu L = 0 .67 8  1 .64 5 ×10 8  1/4  0.711 0.952 +0.711  1/4 = 62 .1 so h =...

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... inclination. Int. J. Heat Mass Transfer, 15(4): 755– 767 , 1972. [8.17] G. C. Vliet. Natural convection local heat transfer on constant heat transfer inclined surface. J. Heat Transfer, Trans. ASME, ... C, 91:511–5 16, 1 969 . [8.18] L. Pera and B. Gebhart. On the stability of natural convection boundary layer flow over horizontal and slightly inclined surfaces. Int. J. Heat...

Ngày tải lên: 21/06/2014, 22:20

... boiling heat transfer. Chem. Eng. Progr., 58 :67 –72, 1 962 . [9.30] P. J. Berenson. Transition boiling heat transfer from a horizontal surface. M.I.T. Heat Transfer Lab. Tech. Rep. 17, 1 960 . [9.31] ... Chapter 9: Heat transfer in boiling and other phase-change configurations [9.34] J. R. Ramilison and J. H. Lienhard. Transition boiling heat transfer and the film tran...

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... Find Q W/m and the temperature of the third wall. 10.30 Two 1 cm diameter rods run parallel, with centers 4 cm apart. One is at 1500 K and black. The other is unheated, and ε = 0 .66 . They are ... wide and 6 ft high. The room is kept at 70 ◦ F, but the pane is at 67 ◦ F owing to heat loss to the colder outdoor air. Find (a) the heat transfer by radiation to the window; (b...

Ngày tải lên: 21/06/2014, 22:20