| Autor: |
Liangbin Su, Yongyi Yang, Liang Li, Wan Yu, Huashan Su, Gang Wang, Tao Hu |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105338- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2214-157X |
| DOI: |
10.1016/j.csite.2024.105338 |
| Popis: |
This paper concentrates on the numerical investigation of slip-flow and heat transfer characteristics in the entry region of elliptical microchannels under isothermal or isoflux boundary conditions. Slip boundaries caused by rarefaction effect are implemented using user-defined functions. The impacts of Reynolds number (25≤ Re ≤ 1000), Knudsen number (0.01≤ Kn ≤ 0.1), Peclet number (17.5 ≤ Pe ≤ 700) and aspect ratio (0.2≤ ε ≤ 1) on the apparent friction factor Reynolds number product fappRe and local Nusselt number Nu(x) are discussed in detail. The results demonstrate that at the entrance region, fappRe decreases with increasing Re, especially for ε = 0.33, Kn = 0.01 and Re |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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