Laminar heat transfer of gas in a parallel-plate microchannel with one wall temperature constant and the other adiabatic
✍ Scribed by Gang An; Jun-Ming Li; Bu-Xuan Wang
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 276 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1099-2871
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✦ Synopsis
Abstract
Based on “wall‐adjacent layer” effect, the convective heat transfer for developed laminar flow of gas through parallel‐plate microchannel with one wall temperature constant and the other adiabatic was analyzed theoretically. Considering the change in thermal conductivity and viscosity of gas in the region adjacent to the solid wall, mathematical models were built and the dimensionless temperature distribution and the corresponding heat transfer characteristics were simulated numerically. The results indicate that the laminar heat transfer coefficient is less than that of the larger passages, while the dimensionless temperature is greater than that of the larger passages. Compared with the monotonous boundary conditions, the varied heat transfer coefficient amplitude of mixed boundary condition is lower. © 2002 Wiley Periodicals, Inc. Heat Trans Asian Res, 32(1): 58–64, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.10075