中文摘要：

以一栋单侧开口自然通风的十层建筑为研究对象，以丙烷作为示踪气体模拟污染物，采用计算流体力学（CFD）的方法模拟了风压和热压共同作用下污染物在垂直方向上的跨户传播现象。结果表明，污染物跨户传播的路径受到风压和热压相对强度及污染源位置的影响，无风和微风条件下，迎风侧污染源房间中有超过9％的污染物会进入邻近上层房间。

英文摘要：

By using computational fluid dynamics （CFD） method, the vertical inter-flat pollutant dispersion around a ten-story high-rise building due to both wind-driven and buoyancy-driven single-sided natural ventilation are investigated. Tracer gas technique is used to quantify the reentry of exhaust air from the source flat to other flats under different wind conditions. By analyzing the concentration distribution, the possible dispersion routes and the risk of air cross-contamination are revealed. The results illustrate that, with single-sided open-window conditions, the pollutant could spread in both vertical directions. Above 9% the exhaust air from the source flat could re-enter into the closed upper floor on the windward side.