本文量測開孔傾斜空腔側壁上的水平鰭片溫度與空氣溫度，搭配逆算法與CFD軟體，探討鰭片長度、鰭片位置、鰭片間距，空腔開孔大小、空腔傾斜角度造成的影響。本文使用之逆算法，將假設的熱壁功率代入套裝軟體ANSYS ICEPAK 18.0，比較模擬結果的溫度與實驗數據，將差值用最小平方法進行分析迭代後，即得到正確的熱壁功率。此外探討不同流動模型與網格數量對模擬結果的影響，透過ICEPAK得到模擬結果並與實驗數據比較，結果顯示零方程式(Zero-equation)所求得的結果較為準確。最後透過ICEPAK後處理產生溫度分布圖與速度流線圖，藉以分析空腔中的熱傳特性。實驗結果顯示鰭片長度增加時會影響空腔中的對流，且遮蔽效應更為明顯，鰭片熱傳係數下降。鰭片間距增加使鰭片間的空氣流速增加，故鰭片熱傳係數上升。冷壁上的鰭片會使空氣流速變慢，導致冷壁熱傳係數與熱壁鰭片熱傳係數降低。空腔角度改變在本文的例子會使鰭片遮蔽效應減弱，有利於熱傳係數增加，但仍需考慮空腔中的幾何配置。空腔開孔後，鰭片熱傳係數皆上升，但隨著流入的空氣過強，導致鰭片周圍空氣形成低速渦旋，降低熱傳係數。

In this paper, the horizontal fin temperature and air temperature in the open inclined cavity are measured and experimentally, and CFD inverse method is used to estimate the power on the hot wall, and then receive sofeware simulation
results. The inverse scheme is to guess the initial value of Q at first, and use CFD simulation software to get simulation results.Then we compare the simulation results with experimental results to get the error of the data, and the error is dealed using the least square method and the Q value is corrected. Repeat the steps until Q converges. We use ANSYSIS 18.0 to simulate, compare the simulation results with experimental results to get suitable flow model and grid, and then analyze its heat transfer characteristics through the velocity streamline and temperature distribution.By changing the fin length, fin distance, fin position, cavity inclined angle and cavity opening size, the influence on heat transfer characteristics in the cavity is discussed.

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