## 摘要

The inverse scheme of the finite difference method in conjunction with the least-squares scheme and experimental measured temperatures is proposed to solve a two-dimensional steady-state inverse heat conduction problem in order to estimate the natural-convection heat transfer coefficient under the isothermal situation h^{-iso} from three vertical fins mounted on a vertical plate and fin efficiency η_{f} for various values of the fin spacing and fin height. The measured fin temperatures and ambient air temperature are measured from the present experimental apparatus conducted in a small wind tunnel. The heat transfer coefficient on the middle fin of three vertical fins is non-uniform for the present problem and its functional form can be difficult to be obtained. Thus the whole fin is divided into several sub-fin regions before performing the inverse calculation. In order to validate the reliability of the present estimates, the present estimates of h^{-iso} compare with those obtained from the correlations recommended by current textbooks and other previous results. The present estimates of h^{-iso} can be applied to obtain a modified correlation of the Nusselt number and Raleigh number.

原文 | English |
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頁（從 - 到） | 239-260 |

頁數 | 22 |

期刊 | Computers, Materials and Continua |

卷 | 22 |

發行號 | 3 |

出版狀態 | Published - 2011 8月 8 |

## All Science Journal Classification (ASJC) codes

- 生物材料
- 建模與模擬
- 材料力學
- 電腦科學應用
- 電氣與電子工程