球带型障碍物对气云爆燃强度影响的实验与数值模拟  

Experimental and numerical simulation of effect of spherical zone obstruction on deflagration of gas cloud

作　　者：丛立新[1] 毕明树[2] 黄明湖[1] 杨国刚[3] 

机构地区：[1]哈尔滨工业大学(威海)海洋学院,山东威海264209 [2]大连理工大学化工学院,辽宁大连116012 [3]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《煤炭学报》2009年第5期661-666,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50076006);教育部科学技术攻关重点资助项目(106054)

摘　　要：实验研究了内置球带型障碍物半径、屏蔽角对气云爆燃超压的影响.基于流体力学控制方程组、k-ε湍流方程和EBU-Arrhenius燃烧模型,建立了可燃气云爆燃的理论模型,并采用SIMPLE算法进行了数值求解.实验结果表明,内置球带型障碍物对可燃气云爆燃强度具有较大的增强作用,最大超压可达到无障碍物时的12倍以上.计算结果与实验值相比较,最大相对偏差为19.6%,平均相对偏差为5.67%.Experiments of deflagration were performed to study the effect of the radius and shield angle of spherical zone obstruction. Based on the fluid mechanical governing equations, k - ε turbulence model and EBU-Arrhenius combustion model, the theoretical models of flammable gas cloud deflagration were established. The SIMPLE algorithm was adopted for numeral solution. The experimental results show that the obstruction enhances the deflagration power considerably. Its maximum overpressure can research 12 times more than that without obstructions. Comparing the calculated results with the experimental data, the maximum and average relative deviations are 19. 6% and 5.67% respectively.

关 键 词：球带型 障碍物 可燃气云 爆燃 超压 

分 类 号：O381[理学—流体力学]