Natural Convection Heat Transfer in an Inclined Air Layer Packed with Spherical Particles
Experiments of natural convection heat transfer in an inclined air layer with spherical particles under isothermal heating and cooling conditions were carried out for the ranges of inclination angles (θ=0180°), aspect-ratios (H/W=2.57.9), modified Prandtl numbers (P*r=1.145), ratios of diameter of s...
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| Published in | Transactions of the Japan Society of Mechanical Engineers Series B Vol. 51; no. 471; pp. 3766 - 3771 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
The Japan Society of Mechanical Engineers
25.11.1985
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0387-5016 1884-8346 |
| DOI | 10.1299/kikaib.51.3766 |
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| Abstract | Experiments of natural convection heat transfer in an inclined air layer with spherical particles under isothermal heating and cooling conditions were carried out for the ranges of inclination angles (θ=0180°), aspect-ratios (H/W=2.57.9), modified Prandtl numbers (P*r=1.145), ratios of diameter of spherical particles to width of the porous layer (d/W=0.040.516) and modified Rayleigh numbers (R*a=2.2×101.03×103). According to the inclination angle, the convection heat transfer in the porous layer varied because of the change of the convection flow type. In addition, useful correlations of non-dimensional convection heat transfer were derived in the relations Nusselt number Nu=f[P*r, d/W, R*a cos(θ-60°)] for θ=015°, and Nu=f[P*r, H/W, R*a (θ-60°)] for θ=0120°. |
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| AbstractList | Experiments of natural convection heat transfer in an inclined air layer with spherical particles under isothermal heating and cooling conditions were carried out for the ranges of inclination angles (θ=0180°), aspect-ratios (H/W=2.57.9), modified Prandtl numbers (P*r=1.145), ratios of diameter of spherical particles to width of the porous layer (d/W=0.040.516) and modified Rayleigh numbers (R*a=2.2×101.03×103). According to the inclination angle, the convection heat transfer in the porous layer varied because of the change of the convection flow type. In addition, useful correlations of non-dimensional convection heat transfer were derived in the relations Nusselt number Nu=f[P*r, d/W, R*a cos(θ-60°)] for θ=015°, and Nu=f[P*r, H/W, R*a (θ-60°)] for θ=0120°. |
| Author | INABA, Hideo SUGAWARA, Masahiro FUKUDA, Takeyuki |
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| Copyright | The Japan Society of Mechanical Engineers |
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| DOI | 10.1299/kikaib.51.3766 |
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| References | (5) Holst, P.H. and Aziz. K., Can. J. Chem. Eng. 50-2 (1972), 232. (11) Seki, N.ほか2名, Int. J. Heat Mass Transf., 21-10 (1960), 985. (7) 増岡,機論,37-293(昭46),90. (8) Schmidt, E. and Silveston, P.L., Chem. Eng. Sym. Ser., 55-29 (1959), 163. (10) 関•ほか2名,機論,45-393-B(昭54), 705. (9) Kunii, D. and Smith, J.M., AIChE J., 6-1 (1960), 71. (4) Vlasuk, M.P., Proc. 4th All-Union Heat Mass Transf. Conf., 11-4 (1972). 45. (2) Kaneko, T.,ほか2名, Int. J. Heat Mass, Transf., 17-2 (1974), 485. (3) Schneider, K.J.. Proc. 11th. Int. Congr. Refrig. 11-4 (1963), 247. (6) Yagi, S. and Kunii. D, Int. Dev. Hert Transf. 4-3 (1962), 750. (1) Combarnous, M.A. and Bories, S.A. Adv. Hydosci., 10 (1975), 231. |
| References_xml | – reference: (3) Schneider, K.J.. Proc. 11th. Int. Congr. Refrig. 11-4 (1963), 247. – reference: (9) Kunii, D. and Smith, J.M., AIChE J., 6-1 (1960), 71. – reference: (2) Kaneko, T.,ほか2名, Int. J. Heat Mass, Transf., 17-2 (1974), 485. – reference: (6) Yagi, S. and Kunii. D, Int. Dev. Hert Transf. 4-3 (1962), 750. – reference: (7) 増岡,機論,37-293(昭46),90. – reference: (10) 関•ほか2名,機論,45-393-B(昭54), 705. – reference: (11) Seki, N.ほか2名, Int. J. Heat Mass Transf., 21-10 (1960), 985. – reference: (8) Schmidt, E. and Silveston, P.L., Chem. Eng. Sym. Ser., 55-29 (1959), 163. – reference: (1) Combarnous, M.A. and Bories, S.A. Adv. Hydosci., 10 (1975), 231. – reference: (4) Vlasuk, M.P., Proc. 4th All-Union Heat Mass Transf. Conf., 11-4 (1972). 45. – reference: (5) Holst, P.H. and Aziz. K., Can. J. Chem. Eng. 50-2 (1972), 232. |
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| SubjectTerms | Inclined Porous Layer /Experimental Study |
| Title | Natural Convection Heat Transfer in an Inclined Air Layer Packed with Spherical Particles |
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