CAJ | 학술논문

毗邻隧道上游隧道出口污染空气会对下游隧道产生影响，恶化其运营环境。以Realizable k-ε三维紊流模型及多组分扩散传输为物理计算模型，采用FLUENT流体计算软件模拟了上下游隧道间不同污染物的浓度分布以及上游隧道在不同间距不同风速时对下游隧道的影响，同时，根据贴壁射流理论，对其进行了理论分析。结果表明：当隧道距离大于400 m，风速小于2 m/s时，毗邻隧道二次污染小于5％。当上游隧道射流风速为2．5 m/s时，由此计算的理论值和模拟值基本吻合。
비린수도상유수도출구오염공기회대하유수도산생영향，악화기운영배경。이Realizable k-ε삼유문류모형급다조분확산전수위물리계산모형，채용FLUENT류체계산연건모의료상하유수도간불동오염물적농도분포이급상유수도재불동간거불동풍속시대하유수도적영향，동시，근거첩벽사류이론，대기진행료이론분석。결과표명：당수도거리대우400 m，풍속소우2 m/s시，비린수도이차오염소우5％。당상유수도사류풍속위2．5 m/s시，유차계산적이론치화모의치기본문합。
For adjacent tunnels ,the pollution air at upstream of tunnel will affect the downstream tunnel and deteriorate its operation environment .Taking realizable k -ε3D turbulent model and multicomponent diffu-sion transfer as physical calculation model , the article used FLUENT calculation software to simulate the concentration distribution of different pollutants between the upstream and downstream of tunnel ,and the im-pact of pollution air from upstream export on the downstream of tunnel in different distances and different air velocities .Meantime , it used theory of wall-attached jet to carry out theoretical analysis .The results showed that the rate of secondary pollution for adjacent tunnel is less than 5%when the distance between tunnels is longer than 400m and wind speed is lower than 2m/s .When the wind velocity of upstream tunnel is 2.5 m/s, the theoretical value by calculation is basically in agreement with simulation result .