Heat Transfer and Hydrodynamics of Slip Confusor Flow under Second-Order Boundary Conditions
- The paper focused on an analytical analysis of the main features of heat transfer in incompressible steady-state flow in a microconfusor with account for the second-order slip boundary conditions. The second-order boundary conditions serve as a closure of a system of the continuity, transport, and energy differential equations. As a result, novel solutions were obtained for the velocity and temperature profiles, as well as for the friction coefficient and the Nusselt number. These solutions demonstrated that an increase in the Knudsen number leads to a decrease in the Nusselt number. It was shown that the account for the second-order terms in the boundary conditions noticeably affects the fluid flow characteristics and does not influence on the heat transfer characteristics. It was also revealed that flow slippage effects on heat transfer weaken with an increase in the Prandtl number.
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| Author: | Andriy Alexandr Avramenko, Nataliya P. Dmitrenko, Igor V. Shevchuk |
|---|---|
| URN: | urn:nbn:de:hbz:832-epub4-22479 |
| DOI: | https://doi.org/10.1007/s10973-020-09517-x |
| ISSN: | 1388-6150 |
| ISSN: | 1588-2926 |
| Parent Title (English): | Journal of Thermal Analysis and Calorimetry |
| Publisher: | Springer International Publishing |
| Document Type: | Article |
| Language: | English |
| Date of first Publication: | 2021/05/01 |
| Date of Publication (online): | 2023/06/16 |
| GND-Keyword: | Wärmeübertragung |
| Tag: | Analytical Solution; Heat Transfer; Microchannel; Velocity Slip |
| Volume: | 144 |
| Issue: | 3 |
| Page Number: | 7 |
| Institutes: | Informatik und Ingenieurwissenschaften (F10) / Fakultät 10 / Institut Allgemeiner Maschinenbau |
| Dewey Decimal Classification: | 500 Naturwissenschaften und Mathematik |
| Open Access: | Open Access |
| DeepGreen: | DeepGreen |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |