| 重气泄漏扩散的影响因素分析 |
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| 引用本文： | 张朝能,宁平,马彩霞. 重气泄漏扩散的影响因素分析[J]. 武汉理工大学学报, 2010, 0(5) |
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| 作者姓名： | 张朝能 宁平 马彩霞 |
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| 作者单位： | 昆明理工大学环境科学与工程学院;昆明市环境科学研究院;云南省环保产业科技开发中心; |
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| 基金项目： | 教育部春晖计划项目(2003009) |
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| 摘 要： | 根据计算流体力学原理提出高原山区城市重气流动和扩散过程的数学物理模型。在给出计算所需的定解条件,采用SIMPLE算法,模拟流场与风洞实验结果吻合良好的情况下,利用该模型分析了重气密度、大气压及气温因素对重气流动和扩散过程的影响。结果表明,重气密度越大,重气效应越明显;在泄放质量流率等其他条件不变的情况下,大气压越小,气温越高,湍流扩散系数越大,同一地点的重气浓度越大,标准大气压下的重气浓度比高原地区810 hPa大气压下的低6.2%~24.7%,平均低19.8%,0℃时的重气浓度比23.5℃时的低6.9%~8.9%,平均低8.2%。
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| 关 键 词： | 扩散 重气 泄漏 影响因素 计算流体力学 |
Analysis of Influence Factors for Dense Gas Leakage Dispersion |
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| ZHANG Chao-neng,,NING Ping,MA Cai-xia. Analysis of Influence Factors for Dense Gas Leakage Dispersion[J]. Journal of Wuhan University of Technology, 2010, 0(5) |
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| Authors: | ZHANG Chao-neng NING Ping MA Cai-xia |
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| Affiliation: | ZHANG Chao-neng1,2,NING Ping1,MA Cai-xia1,3(1.Faculty of Environmental Science , Engineering,Kunming University of Science , Technology,Kunming 650093,China,2.Kunming Institute of Environmental Science,Kunming 650032,3.Yunnan Sci-Tech Development Center of Environmental Protection Industry,China) |
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| Abstract: | The mathematical physics models were founded to reflect the physical phenomenon in the air turbulent flow and dispersion with dense gases in the plateau mountainous city,according to the principles of CFD.The condition to determine the solution was given.They were solved by means of a method based on the SIMPLE algorithm.The influence of dense gas density,air pressure and air temperature on the process of dense gas dispersion was analyzed by this model,the simulation result of flow field and concentration f... |
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| Keywords: | dispersion dense gas accidental release influence factor CFD |
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