| 密闭舱内甲醛气体的扩散模型及其验证 |
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| 引用本文： | 谭文轶,张旋,王永莉,刘香芹.密闭舱内甲醛气体的扩散模型及其验证[J].环境科学与技术,2010,33(4). |
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| 作者姓名： | 谭文轶 张旋 王永莉 刘香芹 |
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| 作者单位： | 南京工程学院环境工程系,江苏,南京,211167 |
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| 基金项目： | 江苏省大学生创新基金项目资助，南京工程学院大学生创新基金项目资助 |
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| 摘 要： | 以5m(L)×3m(W)×3.5m(H)几何结构的房间作为密闭模拟舱,对于形状为1m×0.6m、胶木板材料的污染源,在不通风的状态下,采用CFD技术模拟了室内甲醛扩散情况。通过联立气体质量扩散方程和RNGK～ε湍流模型方程,得到密闭舱内甲醛扩散数学模型,并采用实际监测方法对计算结果进行验证。结果表明:在27℃条件下,在该密闭舱内甲醛的实测浓度分布值为0.8～2×10-6mol/m3,而模型预测值为与实测值基本处于同一数量级。该模型能很好地模拟出甲醛扩散分布。
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| 关 键 词： | 室内 甲醛 模型 |
Diffusion Model of Indoor Formaldehyde in an Unventilated Cabin and Its Verification |
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| Abstract: | Based on the unventilated cabin with structure, 5m (L)×3m (W)×3.5m (H), a square board made of bakelite as pollution source was set up to carry out the experiment of formaldehyde diffusion simulation by CFD. Combined mass diffusion equation with RNG K～ε turbulence equation, a formaldehyde diffusion model was built, and a series of experiments was performed to verify the model. Results shows that the model agrees with the actual formaldehyde diffusion well at 27℃, and the calculated values, with the arrange of 0.8～2×10~(-6)mol/m~3, are in the same magnitude as the monitoring value in experiments. |
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| Keywords: | indoor formaldehyde model |
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