本論文中，利用晶格波茲曼法模擬質子交換膜燃料電池雙極板之流道，模擬範圍包含了流體在雙極板流道和擴散層中流動、擴散與熱傳現象，屬於低雷諾數二維穩態不可壓縮的流場。文中探討流道之壁面在置入不同幾何形狀障礙物後的影響，本文總共考慮了三種不同幾何形狀的障礙物，分別為半圓形、三角形與sine波。同時也改變障礙物的尺寸大小，並與傳統的直流管流道互相比較，發現藉由障礙物的存在增加了對流機制的效應，有效提升流體傳輸至擴散層的量與速度，同時也因為障礙物在流場中扮演擾動的角色，改變了流體的流動路線，在障礙物後側形成的環狀迴流區影響了通過的流體，因而增強局部區域內的熱傳效能。模擬得到的結果不論是熱傳效能或是傳輸至擴散層的流體速度比較而言，置入半圓形障礙物最佳、sine波次之、三角形最後。
　　對於置入障礙物後的流場之熱傳增強分析利用場協同理論來驗證得到的數值解趨勢，透過速度場與溫度梯度場之間的協同角越小，表示其協同程度越好，進而幫助熱傳量的增加。

This study applies the Lattice Boltzmann Method (LBM) to simulate gas flow characteristic in bipolar plate channel of Proton Exchange Membrane Fuel Cells (PEMFCs). The calculated domain includes fluid flow, diffusion, and heat transfer performance in bipolar plate and the porous layer which is been considered as a two-dimensional incompressible steady flow under low Reynolds number. In addition, the interruption within the fluid is induced by different type of obstacles: semicircle, triangularity, and sinusoid. The simulation results show that compared to the straight geometry of a conventional gas flow channel, the wavy-like configuration enhances the transport through the porous layer. The obstacles play the role of causing interruption within the fluid field. The direction of fluid flow toward is changed by obstacles, and the recirculation region formed behind obstacles influence the fluid pass through. As mentioned above, temperature distribution within the channel is improved in local region. According to the simulation results of the heat transfer efficiency and the mass flow rate into diffusion layer, the half circle obstacle has the best performance, followed is the sine wavy obstacle and the tranglar obstacle is ranked third.
Furthermore, the present numerical results are consistent with the field synergy principle, which states that the convective heat transfer is enhanced when the intersection angle between the velocity and the temperature gradient vector decreased by inserting obstacles to fluid field. The results of heat transfer improved significantly.

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