EFFECT OF AN UNSTEADY EXTERNAL FLOW ON MASS TRANSFER TO CAVITIES

AHMED K.SHEHATA; J.DELIANG YANG; ALAN C.WEST

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EFFECT OF AN UNSTEADY EXTERNAL FLOW ON MASS TRANSFER TO CAVITIES

机译：不稳定的外部流动对向空腔传递质量的影响

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Mass transfer to the bottom wall of a rectangular cavity in the presence of an external periodic flow is investigated. Flow unsteadiness is generated by placing a circular cylinder at mid height within a channel. The cavity is located downstream of the cylinder at the lower wall of the channel. Both experimental measurements and numerical simulations are carried out to establish the ability of a time-accurate finite element solver to capture the transient flow and mass transfer. The mass-transfer rate at the bottom wall of the cavity is measured using reduction of ferricyanide ions on a platinum line electrode. Cavity aspect ratios(height/width)of 0.5,1.0 and 1.81 and Reynolds numbers based on channel heights between 100 and 800 are investigated.

机译：研究了在外部周期性流动存在下传质到矩形腔体底壁的质量。通过将圆柱体放置在通道中的中间高度来产生流量不稳定。空腔位于圆柱体的下游，位于通道的下壁。进行了实验测量和数值模拟，以建立时间精确的有限元求解器捕获瞬态流动和传质的能力。使用铂线电极上的铁氰化物离子还原来测量腔体底壁处的传质速率。研究了腔长宽比（高/宽）为0.5、1.0和1.81，以及基于通道高度在100和800之间的雷诺数。

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《International Journal of Heat and Mass Transfer》 |1999年第4期|673-683|共11页
作者
AHMED K.SHEHATA; J.DELIANG YANG; ALAN C.WEST;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
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1. Erratum to 'Conjugate heat/mass transfer from a circular cylinder with an internal heat/mass source in laminar crossflow at low Reynolds numbers' [Int. J. Heat Mass Transf. 48 (2005) 419-424] and 'Unsteady conjugate heat/mass transfer from a circular cylinder in laminar crossflow at low Reynolds numbers' [Int. J. Heat Mass Transf. 47 (2004) 2469-2480] [J] . Gh. Juncu International Journal of Heat and Mass Transfer . 2008,第11a12期

机译：勘误“以低雷诺数在层流错流中结合来自带有内部热/质量源的圆柱体的热/质量传递” [Int。 J.热传质。 48（2005）419-424]和“在低雷诺数下，层流错流中圆柱的非稳态共轭热/质量传递” [Int。 J.热传质。 47（2004）2469-2480]
2. Unsteady Conjugate Mass Transfer between a Single Droplet and an Ambient Flow with External Chemical Reaction [J] . Leonid S. Kleinman, X B Reed Jr. Industrial & Engineering Chemistry Research . 1996,第9期

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3. An integral method of solving unsteady problems of heat and mass conductivity (under conditions of external convective heat and mass transfer) [J] . A. I. Nakorchevsky Промышленная Теплотехника . 1999,第1期

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EFFECT OF AN UNSTEADY EXTERNAL FLOW ON MASS TRANSFER TO CAVITIES

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