Spiral Coil Inserts for Heat Transfer Enhancement in a Parallel-plate Channel

Leng, Xue-Li (author)

Zhang, Guan-Min (author)

Tang, Yu-Feng (author)

Luo, Lin-Cong (author)

Wu, Zan (author): Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH

Ma, Lian-Xiang (author)

Li, Wei (author)

(creator_code:org_t)

2014-06-25
2014
English.
In: Numerical Heat Transfer Part A: Applications. - : Informa UK Limited. - 1040-7782 .- 1521-0634. ; 66:7, s. 756-772

Related links:: http://dx.doi.org/10...; show more...; https://lup.lub.lu.s...; https://doi.org/10.1...; show less...

Abstract Subject headings

The flow fields and heat transfer characteristics in a parallel-plate channel with a transversely placed spiral coil insert were investigated by three-dimensional numerical simulation. The structure of multi-longitudinal-vortices (MLVs) induced by the spiral coil and the effects of MLVs on velocity and temperature fields were studied. The three-dimensional spiral coil induces a series of longitudinal vortices in the channel including leading longitudinal vortex, mainstream longitudinal vortices, near-wall longitudinal vortices, and rear central longitudinal vortex. Transport by the longitudinal vortices can increase the mass exchange between the boundary layer and the mainstream, which speeds up the heat migration from the channel walls and enhances the heat diffusion in the mainstream.

By the author/editor: Leng, Xue-Li; Zhang, Guan-Min; Tang, Yu-Feng; Luo, Lin-Cong; Wu, Zan; Ma, Lian-Xiang; show more...; Li, Wei; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Energy Engineeri ...

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