Computational Fluid Mechanics and Heat Transfer Third Edition 8 ppt

... mass transfer with counterdiffusion 6 48 11 .8 Mass transfer coefficients at high rates of mass transfer . 654 11.9 Simultaneous heat and mass transfer 663 Problems 673 References 685 VI Appendices 689 A ... recollecting how heat transfer was treated in the study of thermodynamics and by seeing why thermodynamics is not adequate to the task of solving heat transfer prob...

Ngày tải lên: 21/06/2014, 22:20

... Θ tip = cosh 0 +(0.04 68/ 0 .86 56) sinh 0 cosh(0 .86 56) +(0.04 68/ 0 .86 56) sinh(0 .86 56) = 1 1.3 986 +0.0529 = 0. 688 6 so the exact tip temperature is T tip = T ∞ +0. 688 6(T 0 −T ∞ ) = 26 + 0. 688 6(150 − 26) = ... calculated with and without considering heat transfer from the tip. Solution. mL =  hPL 2 kA =  120(0. 08) 2 205(0.01/2) = 0 .86 56 Bi ax = hL k = 120(0. 08) 205 =...

Ngày tải lên: 21/06/2014, 22:20

... 0.9130 1. 989 81 1.5029 0 .87 21 2.57043 1. 787 0 0 .85 33 6.00 1.34955 1.2479 0.9021 2.04901 1.5253 0 .85 32 2.65366 1 .83 38 0 .82 81 8. 00 1.39 782 1.2570 0 .88 58 2.1 286 4 1.5526 0 .82 44 2.76536 1 .89 20 0. 788 9 10.00 ... 0.9904 0.90 0 .82 740 1.1107 0. 988 2 1.20 484 1.1902 0. 986 9 1.50442 1.2 488 0. 988 0 1.00 0 .86 033 1.1191 0. 986 1 1.255 78 1.2071 0. 984 3 1.57 080 1.2732 0....

Ngày tải lên: 21/06/2014, 22:20

... 1.10 0 .88 021 0.11 980 0.05 0.05637 0.94363 1.20 0.91031 0. 089 69 0.10 0.11246 0 .88 754 1.30 0.93401 0.06599 0.15 0.1 680 0 0 .83 200 1.40 0.95229 0.04771 0.20 0.22270 0.77730 1.50 0.96611 0.03 389 0.30 ... 0.03 389 0.30 0.3 286 3 0.67137 1.60 0.97635 0.02365 0.40 0.4 283 9 0.57161 1.70 0. 983 79 0.01621 0.50 0.52050 0.47950 1 .80 0. 989 09 0.01091 0.60 0.60 386 0.39614 1 .82 14 0.99000...

Ngày tải lên: 21/06/2014, 22:20

... 0.57067 0.16136 4.00 2.30576 0.95552 0.7 581 6 0.06424 4.9 18 3.20169 0.99000 0 .83 344 0.0 183 7 6.00 4.27964 0.9 989 8 0 .85 712 0.00240 8. 00 6.27923 1.00000 − 0 .86 039 0.00001 This is called a similarity ... 0.33147 0.60 0.05974 0.1 989 4 0.02 981 0.330 08 0 .80 0.10611 0.26471 0.05 283 0.32739 1.00 0.16557 0.32979 0. 082 11 0.32301 2.00 0.65003 0.62977 0.30476 0.26675 3.00 1.39 682 0...

Ngày tải lên: 21/06/2014, 22:20

... 10 −6 0.12  0.02424 8 = 68. 4 This corresponds to fully rough flow. With eqn. (7.49) we have Nu D = (0.02424 /8) (5.74 × 10 5 )(2.47) 1 +  0.02424 /8  4.5( 68. 4) 0.2 (2.47) 0.5 8. 48  = 2, 985 so h = 2 985 0.661 0.12 = ... convec- tion must be considered. Heat travels first from the air at T ∞ through the outside heat transfer coefficient to the duct wall, and then through the...

Ngày tải lên: 21/06/2014, 22:20

... in Heat Transfer, volume 18, pages 87 –159. Academic Press, Inc., New York, 1 987 . [7. 28] S. Kalish and O. E. Dwyer. Heat transfer to NaK flowing through unbaffled rod bundles. Int. J. Heat Mass Transfer, ... 10:1533–15 58, 1967. [7.29] W. M. Rohsenow, J. P. Hartnett, and Y. I. Cho, editors. Handbook of Heat Transfer. McGraw-Hill, New York, 3rd edition, 19 98. 8. Natural...

Ngày tải lên: 21/06/2014, 22:20

... instabil- ity have been reported by Fujii and Imura [8. 16], Vliet [8. 17], Pera and Gebhart [8. 18] , and Al-Arabi and El-Riedy [8. 19], among others. Problems 449 8. 39 A 1 in. cube of ice is suspended ... Experiments on heat transfer from spheres including combined forced and natural convection. J. Heat Transfer, Trans. ASME, Ser. C, 82 (1):214, 1960. [8. 13] G. D. Rait...

Ngày tải lên: 21/06/2014, 22:20

... burnout on flat heaters. J. Heat Transfer, 114(1): 287 – 290, 1992. [9.36] A. E. Bergles and W. M. Rohsenow. The determination of forced- convection surface-boiling heat transfer. J. Heat Transfer, Trans. ASME, ... Engr., 12:474– 481 , 1962. [9.49] M. M. Shah. Chart correlation for saturated boiling heat transfer: equations and further study. ASHRAE Trans., 88 : 182 –196, 1 9...

Ngày tải lên: 21/06/2014, 22:20

... owing to heat loss to the colder outdoor air. Find (a) the heat transfer by radiation to the window; (b) the heat transfer by natural con- vection to the window; and (c) the fraction of heat transferred to ... Edwards. Radiation Heat Transfer Notes. Hemisphere Pub- lishing Corp., Washington, D.C., 1 981 . [10.4] R. Siegel and J. R. Howell. Thermal Radiation Heat Transfe...

Ngày tải lên: 21/06/2014, 22:20