【摘要】 长期以来,氢气风险控制措施一直是能源安全研究的重点,氢气迁移扩散特性的预测是制定氢气风险控制措施的基础。本文基于现有氢气迁移特性机理模型研究成果,耦合氢气扩散过程中的夹带现象及空气阻力因素,建立了大空间内氢气迁移上升扩散的二维数学模型,利用该模型计算得到大空间内的氢气速度分布与浓度分布,并与典型实验数据进行了对比。基于实验数据比对结果,通过拟合系数法得到了优化的夹带系数与阻力系数表达式,采用修正系数的模型的计算结果与实验数据吻合良好,验证了模型的合理性。更多还原

【Abstract】 For a long time,hydrogen risk management have been the focus of energy safety research.The prediction of hydrogen transport and diffusion characteristics is the basis for the development of hydrogen risk management.The analytical study on characteristics of hydrogen transport in large space has been conducted.A two-dimensional hydrogen transport and diffusion model has been built,coupled with the improved entrainment model and air resistance model.The optimized entrainment coefficient and drag coefficient expression are obtained by fitting coefficient method.The calculation results of the two-dimensional model using the correction coefficient agree well with the experimental data,which verifies the rationality of the model.更多还原