本研究係利用硫酸(H2SO4)和碳酸氫鈉(NaHCO3)水溶液在微流道內混合後會產生化學反應，生成二氧化碳來模擬DMFC陽極端微流道中雙相流的傳輸現象，以期待解決二氧化碳氣泡阻塞流道之問題。研究中係利用微機電技術來製作出不同幾何形狀之微流道，分別有等截面積、漸縮和漸擴微流道，再利用不同濃度(0.2 mol/L、0.5 mol/L和0.8 mol/L)之硫酸和碳酸氫鈉水溶液，並通入不同之混合流體體積流率(3.20×10-9 m3/s≦Qmixture≦32.0×10-9 m3/s)來探討雙相流的現象。
研究結果顯示，當濃度越低且流率越大時，氣泡越不易生成；而當氣泡生成後，微流道內的雙相流動型態大致皆為氣泡流或彈狀流。在漸縮微流道內由於入口處的混合效果較差與微流道內加速度效應的雙重影響下，使得化學反應較不易發生；漸擴微流道中則因入口處有較佳的混合效果和微流道內減速度效應影響下，較有利於化學反應的發生，二氧化碳氣泡成長速率亦以漸擴微流道中為最大。
在不同實驗條件下可發現壓降皆有一高頻振盪，其頻率約為45 Hz，這可能是聲波振盪的表現；而在濃度為0.8 mol/L，3.20×10-9 m3/s≦Qmixture≦12.8×10-9 m3/s的等截面積微流道中，除了原有的高頻振盪外，亦發現低頻的振盪，振盪頻率約為0.02-0.04 Hz，並且伴隨著雙相流動型態的轉變(flow pattern transition instability)。

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