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비회색 혼합가스 복사를 고려한 산화제의 성분 변화에 따른 대향류화염의 연소 특성 연구
박원희(Won-Hee Park),조범진(Bum-Jin Jo),박종혁(Jong-Hyuk Park),김태국(Tae-Kuk Kim) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
Detailed flame structures of the opposed flames formed for different oxidant compositions are studied numerically. The detailed chemical reactions are modeled by using the CHEMKIN code. Only the CO₂ and H₂O are assumed to participate by absorbing the radiative energy while all other gases are assumed to be transparent. The discrete ordinates method and a narrow band based WSGGM with a gray gas regrouping technique are applied for modeling the radiative transfer through non-homogeneous and non-isothermal combustion gas mixtures generated by the opposed flow flames. The results show that the different radiation model can cause different results for flame structures and the WSGGM with gray gas regrouping is successful in modeling the opposed flames with non-gray. gas mixture. The results also show that a reasonable information on the flame structure can be obtained from the modeling by considering different chemical compositions of the oxidant.