熱管具有高熱傳量、構造簡單、反應迅速且不需額外提供動力等特性，是目前在各種電子產品及機械、工程系統熱管理中，極為重要之散熱元件之ㄧ。
本文是利用計算流體力學軟體FLUENT來進行模擬分析，以數值方法來分析平板式熱管於穩態時的溫度場及流場狀況，本研究模型以FLUENT做三維流場模擬，針對平板式熱管將其分成蒸氣區和固液區分別做模擬整合，並針對不同變數進行模擬探討。
由模擬結果的溫度場圖可知在靠近熱源的地方溫度梯度較大，在不同熱源輸入情況下，隨著熱通量增多而溫度場跟著變高；且溫度場大小也與毛細結構孔隙率呈正比；在冷卻區與絕緣區變動的情況下，相對的冷卻區域較大的散熱越佳。

Heat pipe has the properties of high heat transfer capacity, simple structure, quick response and no need of driving forces. It is often used in various kinds of electronic products and machinery and hot management of engineering system. It is an extremely important heat dissipation component nowadays.
This text utilized computational fluid dynamics software FLUENT to numerically analyze the temperature field and flow field of a flat plate heat pipe at steady state conditions. Three-dimensional flow field was simulated. The flat heat pipe was divided into vapor region and solid-liquid region. Analysis was done on these two regions separately for various parameters.
The results of temperature field patterns show that temperature gradient is large near the heat source. Increasing the heat flux, the temperature changes higher. Temperature is also found to be proportional to the porosity of the capillary structure. And bigger cooling zone has relatively larger thermal cooling capability.

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