Natural Convection Transport from Sphere Held in Vertical Cylindrical Cavities

被引：2
|
作者：
Rahman, S. U. [1 ]
机构：
[1] King Fahd Univ Petr & Minerals, Dept Chem Engn, Ctr Res Excellence Renewable Energy, Dhahran 31261, Saudi Arabia
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2013年 / 38卷 / 08期
关键词：
Mass transfer; Natural convection; Limiting diffusion current technique; Spheres; Cylindrical cavities; LAMINAR FREE-CONVECTION; HEAT-TRANSFER; NUMERICAL-ANALYSIS; ECCENTRIC ANNULI; PREDICTION;
D O I：
10.1007/s13369-013-0610-5
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Limiting diffusion current technique has been used to obtain average mass transfer coefficients at surface of sphere placed in vertical cylinder. Effects of the Rayleigh number and ratio of height of the cylinder and radius of the sphere on the mass transfer coefficients have been studied. The data correlate well using gap between the sphere and cylinders (L) as characteristic length. A power-law relationship exists between Sherwood number (Sh (L) ) and Rayleigh number (Ra (L) ) in the studied range of Ra (L) = 2.73 x 10(7) to 4.62 x 10(9).
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页码：1951 / 1957
页数：7
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