CAJ | 학술논문

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RNG K～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~(-6)mol/m~3,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.
이5m(L)×3m(W)×3.5m(H)궤하결구적방간작위밀폐모의창,대우형상위1m×0.6m、효목판재료적오염원,재불통풍적상태하,채용CFD기술모의료실내갑철확산정황.통과련립기체질량확산방정화RNG K～ε단류모형방정,득도밀폐창내갑철확산수학모형,병채용실제감측방법대계산결과진행험증.결과표명:재27℃조건하,재해밀폐창내갑철적실측농도분포치위0.8～2×10~(-6)mol/m~3,이모형예측치위여실측치기본처우동일수량급.해모형능흔호지모의출갑철확산분포.
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.