Momentum and Heat Transfer Phenomena of Confined Spheroid Particles in Power-Law Liquids
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- 作者：C. Rajasekhar Reddy ; Nanda Kishore
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2014
- 出版时间：January 15, 2014
- 年：2014
- 卷：53
- 期：2
- 页码：989-998
- 全文大小：649K
- ISSN：1520-5045
文摘
Effects of wall confinement and the power-law fluid behavior index on momentum and heat transfer phenomena of confined spheroid particles are numerically investigated over wide ranges of conditions such as the Reynolds number, Re, 1鈥?00; Prandtl number, Pr, 1鈥?000; particle aspect ratio, e, 0.5鈥?.5; wall confinement factor, 位, 2鈥?; and power-law fluid behavior index, n, 0.4鈥?.8. Some of the key findings include that the size of the recirculation wake at the rear end of the particle increases with the increasing particle aspect ratio and/or Reynolds number and/or wall factor. The total drag coefficient (Cd) decreases with the increasing wall factor and/or Reynolds number and/or the decreasing power-law index. Regardless of values of the Reynolds and Prandtl numbers and regardless of the shape of the spheroid particles, the average Nusselt number increases with the decreasing power-law index and/or with the decreasing wall factor.