本研究的目的在於建立螺旋環填充物之不規則堆疊的流場模型，以Ansys®軟體進行運算，並使用吸收塔實驗驗證模擬。
本研究利用Solidworks®建立一套系統設計模型，而在模擬方面利用隱式VOF法並結合PID控制器來調整邊界壓力來計算出氣液接觸面積、持液率與壓力降。
接著，利用的二氧化碳和氫氧化納的吸收塔實驗求得拉西環與螺旋環的氣液接觸面積結果；另外，利用氮氣與RO水來進行吸收塔實驗求得拉西環與螺旋環持液率的結果。
由模擬結果得知，氣液接觸面積與結果趨勢符合，但持液率方面卻有些微落差，這歸因於模擬方法所造成的誤差，所以本研究最後將討論模擬方法的優缺點並探討如何使用才能得到最佳結果。

This study established a CFD model to simulate fluid phenomenon of helical rings in absorbers, as well as the model was validated by the experiment of bench scale absorber.
This study has a system to tell everyone how to establish a random packing model by helical packings and using computational fluid dynamics by implicit VOF method combined PID controller to control pressure for calculate interfacial area、liquid holdup and pressure drop.
Moreover, this research used CO2 and NaOH to finish interfacial area experiment for Raschig rings and helical rings；In the other hand, this study used N2 and RO water to achieve liquid holdup experiment for Raschig rings and helical rings.
By the simulated results, we find the simulated interfacial area was significantly close to the experimental interfacial area but the simulated liquid holdup was s lower than the experimental liquid holdup. Therefore, we find the reason is simulated method and we discuss different simulated method and choose which method is better for our case.

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