【摘要】 以在实验基础上获得的电火花等效计算数据为能量输入,并按照粉尘云的点火机理建立了完整的粉尘云最小点火能数学模型.通过模型计算,研究了粉尘粒径、粉尘质量浓度、湍流度、火花能量密度及火花放电时间对最小点火能的影响.计算结果与实验测量结果基本一致.通过将模型计算与实验测量相结合将使粉尘云最小点火能的确定更准确、合理.更多还原

【Abstract】 Using the equivalent data calculated for electric spark obtained from experiment as energy input and according to the ignition mechanism of dust clouds,a mathematical model was developed for the minimum ignition energy of dust clouds.Then,the influence of dust particle size,dust concentration,turbulence,spark energy density and spark discharging time on minimum ignition energy was studied through model calculation.The result was basically consistent with the experiment data,and combining the model calculation with experimental measurement could make the determination of minimum ignition energy of dust clouds more accurate and reasonable.更多还原