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利用已有的气体爆炸模型和包含初始压力、初始温度的气体爆轰参数的计算公式,从理论上研究初始压力和初始温度对气体爆轰参数的影响情况。使用VisualBasic语言编写计算程序,将计算值与文献值进行对比,具有较好的一致性。以甲烷-空气混合物为例,计算在98000Pa,280～400K及298K,0.1～0.5MPa的气体爆轰参数。计算结果表明,初始压力一定,混合物的爆轰压随初始温度的升高而减小,爆轰波速增大;初始温度一定,混合物的爆轰压随初始压力的增大而增大,爆轰波速基本不变;在初始温度和初始压力两个影响因素中,初始压力对混合物爆轰参数的影响明显大于初始温度。
The influence of initial pressure and initial temperature on gas detonation parameters is theoretically studied by using the existing gas explosion model and the calculation formula of gas detonation parameters including initial pressure and initial temperature. Use VisualBasic language to write the calculation program, compare the calculated value with the literature value, with good consistency. Taking methane-air mixture as an example, the gas detonation parameters at 98000Pa, 280 ~ 400K and 298K, 0.1 ~ 0.5MPa were calculated. The results show that the detonation pressure of the mixture decreases with the increase of the initial temperature and the detonation velocity increases with the initial pressure constant. The detonation pressure increases with the initial temperature and the detonation pressure of the mixture increases with the initial pressure. The initial velocity and the initial pressure of two influencing factors, the initial pressure on the detonation parameters of the mixture significantly greater than the initial temperature.