Entrance length effects on Graetz number scaling in laminar duct flows with periodic obstructions: Transport number correlations for spacer-filled membrane channel flows
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- 作者：Wilko Rohlfsa ; b ; ; John H. Lienhard Va
- 关键词：Laminar duct flow ; Heat transfer coefficient ; Mass transfer coefficient ; Nusselt number correlation ; Prandtl number ; Numerical simulation ; Sherwood number ; Schmidt number
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：97
- 期：Complete
- 页码：842-852
- 全文大小：3356 K
文摘
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Transport numbers scale with Graetz number for steady flows with periodic obstacles.
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Thermal entrance length scales with Graetz number as in empty channel flows.
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Beyond entrance length, transport numbers weakly depend on Reynolds and Prandtl.
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Graetz number scaling breaks down with the onset of unsteady flow conditions.
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Mass transfer in spacer-filled channel flows is dominated by entrance length effects.