本研究提供一套適用於預混火焰的層流火焰速度量測系統，可以應用在混合燃氣以及強氧化劑的燃燒條件。在當量比為0.8到1.4的範圍中，利用紋影拍攝法獲取甲烷/空氣、甲烷/一氧化二氮及甲烷/一氧化碳/氫氣/空氣的二維火焰面長度，並根據質量守恆定理，計算出受到拉伸的層流火焰速度。接著透過Markstein length以及適用於長方形燃燒器的流速(Bulk velocity)的校正，將速度轉為未拉伸層流火焰速度。為了驗證提出的量測系統準確性，在甲烷/空氣的預混燃燒條件下，使用GRI 3.0反應機制的數值模擬計算一維未拉伸層流火焰速度，並與實驗結果相比。實驗與模擬結果顯示，兩者在當量比為0.85到1.2之間的差異皆小於3.8%。隨後，應用此量測系統於混合燃氣以及強氧化劑的預混火焰，檢測其對複雜的燃燒條件的計算結果，並篩選出適用於強氧化劑的反應機制。

The present study centers on the experimental determination of laminar burning velocity for critical premixed flames with multiple fuels or high energetic oxidizers. Experiments were conducted with a slot burner in CH4/air, CH4/N2O, and syngas (CH4/CO/H2)/air premixed flames with the equivalence ratios varied from 0.8 to 1.4. With the flame surface area determined from the schlieren measurement system, stretch effect corrected by Markstein length, the unstretched laminar burning velocity can be garnered according to the conservation of mass. Initially, experimental results of CH4/air premixed flame velocities are validated by comparing with one-dimensional unstretched laminar burning velocities via numerical simulations with the GRI 3.0 mechanism. The experimental results in equivalence ratio ranging from 0.85 to 1.2 demonstrated the velocity differences less than 3.8%. Then the validated burning velocity measurement system is implemented in CH4/N2O and syngas/air premixed flames. Eventually, appropriate chemical mechanisms, such as USM or UGM, can be validated for the numerical simulation of critical premixed flames via the proposed laminar burning velocity measurement system.

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