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- Luo, LeiHarbin Institute of Technology (author)
Convergence angle and dimple shape effects on the heat transfer characteristics in a rotating dimple-pin fin wedge duct
- Article/chapterEnglish2019
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- 2019-02-04
- Informa UK Limited,2019
- 25 s.
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- LIBRIS-ID:oai:lup.lub.lu.se:c0b843f0-c64a-4ef4-9408-af74b0b3ca50
- https://lup.lub.lu.se/record/c0b843f0-c64a-4ef4-9408-af74b0b3ca50URI
- https://doi.org/10.1080/10407782.2018.1543920DOI
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- Language:English
- Summary in:English
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- A numerical method is employed to study effects of convergence angle and dimple shape on flow structure and heat transfer under a rotating frame. The investigated convergence angles are 0.0°, 6.3°, and 12.7°. The dimple shapes are circular, streamwise-elliptical, and spanwise-elliptical. The rotation number ranges from 0.0 to 0.4. Computed flow structures and heat transfer are compared. Higher rotation number generates better heat transfer in the dimple-pin wedge duct. The rotation direction also affects the flow structure and heat transfer. The spanwise-elliptical dimple shape shows best heat transfer augmentation as it generates the strongest vortex structure and turbulent kinetic energy in the dimples. Larger convergence angles exhibit larger Nusselt numbers and better heat transfer enhancement. Effects of the Coriolis force are considered as this force has favorable effects on enhancing the heat transfer on the surface it acts on.
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- Yan, HanHarbin Institute of Technology (author)
- Yang, ShaoyunHarbin Institute of Technology (author)
- Du, WeiHarbin Institute of Technology(Swepub:lu)we3801du (author)
- Wang, SongtaoHarbin Institute of Technology (author)
- Sunden, BengtLund 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(Swepub:lu)vok-bsu (author)
- Zhang, XinghongHarbin Institute of Technology (author)
- Harbin Institute of TechnologyVärmeöverföring (creator_code:org_t)
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- In:Numerical Heat Transfer; Part A: Applications: Informa UK Limited74:10, s. 1611-16351040-77821521-0634
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