粉尘云最小点火能数学模型  

Mathematical Model for Minimum Ignition Energy of Dust Clouds

作　　者：任纯力[1] 李新光[1] 王福利[1] S.RADANDT 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004 [2]应用系统安全及劳动医学研究协会,德国曼海姆68165

出　　处：《东北大学学报（自然科学版）》2009年第12期1702-1705,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50674023)

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.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 modal 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.

关 键 词：粉尘云 粉尘爆炸 最小点火能 电火花 数学模型 

分 类 号：X932[环境科学与工程—安全科学]