The Analysis of the Characteristics of Micro-scale Heat Transfer
博士 === 國立成功大學 === 工程科學系碩博士班 === 92 === Abstract In this study, the characteristics of three conduction models with finite pulse and periodic-pulses temperature sources are investigated. The three models are Diffusion model, CV model and DPL model. The latter two models possess hyperbolic features o...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/u82zdr |
| Summary: | 博士 === 國立成功大學 === 工程科學系碩博士班 === 92 === Abstract
In this study, the characteristics of three conduction models with finite pulse and periodic-pulses temperature sources are investigated. The three models are Diffusion model, CV model and DPL model. The latter two models possess hyperbolic features of micro-scale heat conduction and the former behaves as the conventional Fourier conduction.
Numerical experiments via Laplace transform and Riemann-sum approximation are used to show the propagation features of these three models. The regions that these three models merged together are explored. The results indicate a special double-peaks phenomenon of CV model at larger non-dimensional time. The sine pulse, triangle pulse and wider finite pulse are also used to investigate their effects on the heat transfer modes.
In addition, the two-waves collision phenomenon and the possibility of violation of the 2nd law of the thermodynamics are also examined. From the results obtained, the region of 2.8<δ<8 is proposed as the applicable region of CV model in the micro-scale heat transfer area.
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