摘要
根据大气扩散方程建立公路隧道峒口污染物扩散的物理数学模型,并对某城市隧道峒口在冬、夏两季主导风向情况下CO扩散情况、浓度分布进行了数值模拟。数值计算结果表明,在距地面1.5m的标高上CO集中隧道引道坡附近,对人行道附近人员影响较小;在横向风向下,局部地区CO浓度超标。
According to air diffusion equation, it is a mathematic and physical model of pollutant diffusion for tunnel portal. It simulates CO diffusion and CO concentration which in different wind direction of tunnel portal in summer and winter in a city .It show that CO diffusion is centralize along ramp approach at 1.5m high, and CO concentration is low in pavement which can not effect people. But the across wind will make CO concentration overproof in someplace.
出处
《制冷与空调（四川）》
2007年第2期6-8,共3页
Refrigeration and Air Conditioning
关键词
隧道峒口
扩散
数值模拟
tunnel portal
diffusion
numerical simulation
