风压通风下相邻工业建筑在不同间距下污染物扩散研究  

Study on pollutant diffusion of adjacent industrial buildings with different distances under wind pressure ventilation

作　　者：赵坤庆 付林志 孟晓静[1] 曹莹雪 张子璐 ZHAO Kunqing;FU Linzhi;MENG Xiaojing;CAO Yingxue;ZHANG Zilu(School of Resources Engineering,Xi'an University of Architecture and Technology,Xi'an Shaanxi 710055,China)

机构地区：[1]西安建筑科技大学资源工程学院,陕西西安710055

出　　处：《工业安全与环保》2025年第1期87-90,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金项目(52308115)。

摘　　要：为研究污染物在相邻工业建筑室内和建筑街谷扩散规律和分布情况,采用CFD流体仿真模拟软件建立相邻工业建筑模型,对不同建筑间距下的NO_(2)污染物在建筑室内及街谷的扩散情况进行模拟,分析在风压通风下,建筑间距对建筑室内和街谷中污染物扩散分布情况的影响。结果表明,随着建筑间距的增加,下风向建筑的通风形式会出现明显变化,从穿堂风转变为以背风窗为主要进风方式;同时,在来流风的作用下,由上风向建筑释放的NO_(2)更容易从建筑街谷上方流出,从而使街谷内和下风向建筑室内的污染物浓度显著降低。In order to study the diffusion law and distribution of pollutants in adjacent industrial buildings and street canyons,CFD fluid simulation software was used to establish adjacent industrial building models to simulate the dif-fusion of nitrogen dioxide pollutants in building interiors and street canyons under different building distances.The in-fluence of building distances on pollutant diffusion distribution in building interior and street canyon under wind pres-sure ventilation was analyzed.The results show that with the increase of building spacing,the ventilation form of down-wind buildings will change significantly,from the through-the-hall wind to the leeward window as the main air intake mode;at the same time,under the action of incoming wind,the nitrogen dioxide pollutants released by the upwind buildings are more likely to flow out from the top of the building street canyon,thereby significantly reducing the pol-lutant concentration in the street canyon and the downwind building interior.

关 键 词：数值模拟 污染物扩散 建筑间距 风压通风 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程] X169[环境科学与工程—环境科学]