不同燃燒化學模式對丙烷層流預混火焰預測之影響

Effects of Different Combustion Chemistry Models on Prediction of Laminar Premixed Propane Flame

楊雅玲(Ya-Ling Yang) ； 張克勤(Keh-Chin Chang)

《中國航空太空學會學刊》 26卷2期 (1994/06) Pp. 121-127

https://doi.org/10.6124/TAASRC.199406_26(2).04

摘要

爲達節省計算時問和複雜程度的目的，本文利用詳盡的量測數據：包括完整的進、出口條件，使用簡化之二步驟、三步驟燃燒化學反應模式來模擬丙烷層流預混火焰之燃燒流場並和實驗比較。結果發現二步驟、三步驟化學反應模式確能有效地改善因爲使用一步驟化學反應模式太過簡化而造成的誤差。但因富油火焰核心部份結構複雜還含有許多二步驟、三步驟化學反應模式無法預測到的裂解碳氫化合物，如C2H6，C2H4，CH4，H2等，所以仍需尋求更完整之化學模式，以得到最佳的結果。

關鍵字

燃燒化學模式 ； 層流預混火焰 ； 丙烷火焰

並列摘要

For purpose of saving computational effort and alleviating model complexity, a two-step and a three-step simplified reaction models are used in calculations of a laminar, premixed propane flame. A fuel-rich case investigated by Chen, which provided complete inlet and outlet information, is tested using these two chemistry models. Comparisons between prediction and measurement show that either two-step or three-step model can effectively improve the prediction errors introduced by use of one-step reaction model. However, the kernel structure of the rich flame is very complicated. The two-step and three-step models do not include the reations representing the formation of intermediate hydrocarbons in pyrolysis process, such as C2H6, C2H4, CH4, H2, et. al. Another better, complete chemistry model for propane-air combustion remains to be searched.

並列關鍵字

combustion chemistry model ； premixed laminar flame ； propane flame