| 重气连续泄漏扩散的盐水模拟实验 |
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| 引用本文： | 秦颂,董华,张启波,薛梅,曹烨.重气连续泄漏扩散的盐水模拟实验[J].环境化学,2007,26(5):666-670. |
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| 作者姓名： | 秦颂 董华 张启波 薛梅 曹烨 |
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| 作者单位： | 青岛理工大学环境与市政工程学院,青岛,266033 |
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| 基金项目： | 科技攻关计划课题
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山东省青岛市科技发展基金 |
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| 摘 要： | 根据相似理论,分析了用盐水模拟方法研究意外泄漏的重气在大气中扩散过程的可行性,通过假设重气为不可压缩气体以及在均匀温度场中扩散等条件,推导出模拟实验的准则数.采用缩比模型的盐水模拟实验,对重气在大气中的扩散速度及浓度变化进行了分析,证实了重气扩散过程中的重力沉降、密度分层以及近源区分叉等现象.实验表明,在满足主导准则数相等的条件下,盐水在清水中的扩散可以较好地再现重气在大气中的扩散特征.
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| 关 键 词： | 重气扩散 盐水扩散 盐水模拟实验 相似理论 连续 泄漏扩散 水模拟实验 CONTINUOUS DISPERSION SIMULATION EXPERIMENT WATER 扩散特征 清水 现象 分叉 近源区 密度分层 重力沉降 浓度变化 扩散速度 缩比模型 准则数 条件 均匀温度场 |
| 修稿时间： | 2006-10-20 |
SALT WATER SIMULATION EXPERIMENT FOR DISPERSION OF CONTINUOUS LEAKED HEAVY GAS CAO Ye |
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| QIN Song,DONG Hua,ZHANG Qi-bo,XUE Mei,CAO Ye.SALT WATER SIMULATION EXPERIMENT FOR DISPERSION OF CONTINUOUS LEAKED HEAVY GAS CAO Ye[J].Environmental Chemistry,2007,26(5):666-670. |
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| Authors: | QIN Song DONG Hua ZHANG Qi-bo XUE Mei CAO Ye |
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| Abstract: | The feasibility to simulate the accidental leaked heavy gas dispersion in atmosphere by salt water experimental method is analyzed according to the similarity theory. The criteria of simulation experiment are derived based on the assumption that the heavy gas is incompressible and dispersed in uniform temperature field.The dispersion phenomenon of heavy gas is simulated by the scaled model salt water experiment.The variation of dispersion velocity and concentration of heavy gas are measured.The phenomena such as gravity sedimentation, density stratification and near-source bifurcation are confirmed.Experimental results show that salt water simulation experiment can reflect the dispersion characteristics of heavy gas well if only the main criteria are suitable. |
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| Keywords: | heavy gas dispersion salt water dispersion salt water simulation experiment similarity theory |
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