直流電場下陽離子交換樹脂附近的微小渦流

本實驗所使用的流道及陽離子交換樹脂均為中正大學的王少君老師所提供。圖八十 一為流道的上視圖，流道由三個直徑3mm 的圓形所構成，彼此之間以 1mm 寬的流道連 接，流道的深度為1mm。陽離子交換樹脂的粒徑大約在 1mm 上下。流道的立體圖如圖 八十所示。而實驗時陽離子交換樹脂所擺放的位置就如圖八十一及圖八十二所示。電極 為不易氧化的白金電極，分別將正負兩極置於兩邊外側的圓形區域內（必須要接觸到工 作流體），下面的實驗結果所使用的電壓為229V 的直流電。圖八十三為王老師所發表的 論文中[13]，拍攝的陽離子交換樹脂和其附近的為小渦流的位置相對關係圖。圖八十四 為本實驗利用µ-PIV 所拍攝的影像圖，圖中陰影的部分為陽離子交換樹脂。圖八十四的 影像垂值部分的尺寸為 1140µm。圖八十五則為陽離子交換樹脂周圍微小渦流的 µ-PIV 分析結果，經由µ-PIV 的速度向量分佈圖可明顯的看到陽離子交換樹脂旁的微小渦流。

圖八十一 流道上視圖及陽離子交換樹脂的擺放位置

圖八十二 流道的立體圖及楊離子交換樹脂的擺放位置

圖八十三 陽離子交換樹脂周圍的微小渦流[13]

圖八十四 陽離子交換樹脂周圍的 µ-PIV 影像圖

圖八十五 陽離子交換樹脂周圍微小渦流的 µ-PIV 分析結果

四、未來展望

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