摘要
本論文主要發展單一沸騰微流道與多重平行沸騰微流道在強制對流條件下，以雙相流均質模式探討其系統穩定性。
在非線性分析模式方面，對於每一通道以Galerkin 節點近似法假設相鄰兩節點的焓為線性分佈後，直接將均質模式下有關流動之非線性偏微分統御方程式轉換為一組非線性之常微分程式，而得到時域的非線性分析模式。而藉此針對單一沸騰微流道與多重平行沸騰微流道做穩定性分析，並研究其非線性振盪行為之特性。
研究的成果中顯示微通道系統屬低壓系統，具有高比容比的特性，且在不同通道數的微通道系統中，其穩定運轉區皆非常的小。因此，相較於一般尺度的沸騰系統而言，微通道系統是較不穩定的。不同通道數其振盪現象分析中，在較低的乾度時(x<0.3)，主要發生的不穩定類型為流衝不穩定性。系統幾何參數和質量流率對穩定性的分析方面，發現質量流率對穩定性的影響最為顯著，而通道長度、入口流阻和 值的改變亦可以較為次要性的提高系統的穩定性。道數的增加可以加大系統的阻泥項，使得系統較為穩定。在本研究中，以三通道系統呈現最穩定的現象。在多通道系統發生極限循環時，不同的通道會產生不同相位的振盪，且其振盪週期可能一大一小成對的形式出現。

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