硫化氢扩散规律数值模拟  

Numerical Simulation of Hydrogen Sulfide Diffusion Rule

作　　者：张园园[1] 孙铁[1] 王丽 张巨伟[1] Zhang Yuanyuan;Sun Tie;Wang Li;Zhang Juwei(School of Mechanical Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2018年第6期59-64,共6页Journal of Liaoning Petrochemical University

基　　金：国家重点研发计划项目(2018YFC0808500)

摘　　要：硫化氢一旦泄漏扩散,其后果不堪设想,为了掌握硫化氢扩散规律,采用MATLAB和VC++软件,对源强、风速、源高影响下的硫化氢扩散规律进行了数值模拟。模拟结果表明,夜间,源强增大时泄漏源下风向扩散范围增大,扩散区域硫化氢质量浓度梯度增大,源高增加时泄漏源下风向扩散区域的最大宽度变窄,面积变小;白天,在日光照射强度低、风速大于等于4m/s的条件下,风速增大时泄漏源下风向扩散范围减小,扩散区域硫化氢质量浓度梯度减小,增大源高、风速有利于降低硫化氢的质量浓度,减小危害。研究结果可为事故预防和应急救援提供依据。Once hydrogen sulfide is leaked and diffused, the consequences are unimaginable. In order to master the law of hydrogen sulfide diffusion, the diffusion law of hydrogen sulfide under the influence of source strength, wind speed and source height was numerical simulated by MATLAB and VC＋＋ software. The simulation results show that at night, when the source strength increases, the downwind direction diffusion range increases under the leakage source, the hydrogen sulfide mass concentration gradient increases in the diffusion area, and when the source height increases, the maximum width of the downwind direction diffusion area under the leakage source becomes narrower and the area becomes smaller. During the daytime, when the sunlight intensity is low and the wind speed is greater than or equal to 4 m/s, the downwind direction diffusion range of the leakage source decreases as the wind speed increases, and the hydrogen sulfide mass concentration gradient decreases in the diffusion area. Increasing the source height and wind speed is beneficial to reducing the mass concentration of hydrogen sulfide and the hazard. The research results can provide a basis for accident prevention and emergency rescue.

关 键 词：硫化氢 数值模拟 MATLAB 

分 类 号：X928.02[环境科学与工程—安全科学] U698.6[交通运输工程—港口、海岸及近海工程]