• 作者： Liou, Ching-Tien; Chien, Yu-Shu
• 中文摘要： 本篇論文討論巨觀混合與微觀混合對連續攪拌槽反應器在恆溫反應下反應速率為-r/sub a/=kCa/(1+KCa)/sup 2/多重與唯一穩態的影響。在本篇論文的巨觀混合與微觀混合模式將分別使用Collete's模式與簡化的四個環境模式。我們發現上述反應系統的多重穩態的必要及充分條件,也使得真正多重性穩態區域之縱軸Da值會往上或往下移動或不動。上述現象並沒有出現在微觀混合情況。微觀混合使無因次進口濃度(Xa/sub 0/)減少到無因次有效進口濃度(Xa/sub 0//sup */)。這個結果可能使得當Da>27及Xa/sub 0/落在〔Xa/sub 0//sup 1/,Xa/sub 0//sup u/〕區間的多重穩態會改變至唯一穩態。相同的,當 Xa/sub 0/>Xa/sub 0//sup u/的唯一穩態會改變至多重穩態。
• 英文摘要： In this paper, the effect of macromixing and micromixing has been discussed with multiple and unique steady states in a CSTR where chemical reaction with the rate expression is r/sub a/=-kCa/(1+KCa)/ sup 2/. The models of macromixing and micromixing, Cholette's model and the simplified Four Environment model were employed in the paper. Our investigation has been on how these different mixing situations affect the multiple steady states in the above-mentioned system. The effect of macromixing not only affects the necessary and sufficient conditions for multiplicity, but makes also the ordinate of Damkohler number of the exact region of multiplicity shift up or down or not change. Above-mentioned phenomena have not appeared in the micromixing case. However, the micromixing case makes the dimensionless input concentration (Xa/sub 0/) reduce to the dimensionless effective input concentration(Xa/sub 0//sup */). This result may change multiple steady states to unique steady state when Da>27 and Xa/sub 0/ falls into the range of .lbrak.Xa/sub 0//sup 1/,Xa/sub 0//sup u/.rbrak. for multiplicity. Similarly the unique steady state may be changed to multiple steady states when Xa/sub 0/>Xa/sub 0//sup u/.
• 中文關鍵字： 多重性; 微觀混合; 巨觀混合; 連續攪拌槽反應器
• 英文關鍵字： Multiplicity; Micromixing; Macromixing; Cstr