本文是針對具加熱段水平渠道之共軛熱傳做詳細的數值研究。本文紊流統御方程式乃是以控制體積法為基礎，乃是以控制體積為基礎，配合有限差分法及冪次法則來離散成差分方程式。對於紊流的結構則是以 紊流模式配合牆函數來描述。並以SIMPLE運算法則求解壓力-速度結合的問題。
本文研究的參數為層流與紊流雷諾數（Re=9.8~500、 Re=3000~10000）、加熱段溫度(800K、900K、1000K)或等熱通量（ =12.7 、38.1 、63.5 ），加熱段長度(0.1651m、0.2032m、0.3048m)。
在數值研究方面，氣體流場的溫度分佈和熱傳現象與Chiu et al.(2001)的實驗結果顯示相當吻合。共軛熱傳對於通道內加熱段表面、渠道壁面以及氣相的溫度分佈與均勻性有顯著的影響，因此影響了熱傳率。本文數值預測可以提供對於共軛熱傳效應之物理特性與數值共軛熱傳模式的適用性。

The detailed numerical study is carried out to investigate conjugate heat transfer in horizontal channels with a heated section. The turbulent-governing equations are solved by a Control-Volume base on finite-difference method with power-law scheme, and the well-known turbulence model and its associate wall function to describe the turbulent structure. The SIMPLE algorithm is adopted to solve the pressure-velocity coupling.
The parameters studied include laminar and turbulent Reynolds number (Re=9.5~500, Re=3000~10000), temperature of heated section
( =800K, 900K, and 1000K) or constant heat flux ( =12.7 , 38.1 , 63.5 ), length of heated section ( =0.1651m, 0.2032m, 0.3048m).
In the numerical study, the gas flow field temperature distribution and heat transfer are examined with the experimental results of Chiu et al. (2001) and show good agreement. Conjugate heat transfer is demonstrated to significantly affect the temperature distribution and uniformity at the heated section’s surface, channel wall and the gas phase, thus impacting the rate of heat transfer. Numerical prediction obtained from this study will provide physical insight into conjugate heat transfer effects and facilitates validation of numerical conjugate heat transfer models.

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