Effects of mass flow rate and equivalence ratio on laminar premixed methane air flame

Öz

The structures of laminar premixed flames of methane air mixture are investigated for different equivalence ratios and different mass flow rates numerically. Chemkin 19 program and GRI-Mech 3.0 mechanism is used for numerical solution. The axial velocity and mole fractions are investigated for each runs. It found that with the increase of the mass flow rate; the axial velocities of the flame, the axial location of the reaction zones and the mole fraction values of the intermediates increases. The values of the mole fractions of the reactants do not change with mass flow rate.

Anahtar Kelimeler

• Methane-air mixture
• laminar premixed flame
• equivalence ratio

Kütle debisi ve denklik oranlarının önkarışımlı laminer metan-hava karışımı alevi üzerine etkileri

Öz

Metan hava karışımından oluşan laminar ön karışımşlı alev yapısı farklı denklik oranı ve farklı kütle debileri için sayısal olarak incelenmiştir. Sayısal çözümleme için Chemkin 19 programı ve GRI-Mech 3.0 mekanizması kullanılmıştır. Her bir deneme sonucunda alevin eksenel hızı ve mol oranları bulunmuştur. Sonuç olarak, kütle debisi arttıkça, alevin eksenel hızının arttığı, reaksiyon bölgesinin eksenel konumunun arttığı ve ara bileşiklerin mol oranlarının arttığı belirlenmiştir. Ayrıca kütle debisi ile ürünlerin mol oranlarının değişmediği görülmüştür.

Anahtar Kelimeler

• Metan-hava karışımı
• laminar ön karışımlı alev
• denklik oranı

Kaynakça

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