以苏州地区生态园区为研究对象,分析园区热岛效应的影响因素以及与规划相关的元素,利用CFD技术对现状及规划状况下的园区热环境进行模拟研究,得到不同方案下温度场、速度场及空气龄场等计算结果,对比分析,发现通过规划生态廊道、控制建筑密度及高度、提高乔木覆盖率及推广屋面绿化等手段,可以有效缓解热岛效应,提高园区舒适度.同时也为生态规划设计提供了一种新的思路.

武汉三阳路隧道为公铁合建水下盾构隧道，地铁行车方向左侧富裕空间设计作为公共疏散通道。地铁列车发生火灾且动力丧失时，人员需打开列车侧门向纵向逃生平台上疏散，然后经横向疏散门进入到疏散通道内避难，疏散门的间距和宽度直接影响人员疏散时间。采用Pathfinder2009．2软件对人员疏散行动时间进行模拟计算，验证了疏散门设计间距100 m、宽0．9 m的合理性，并得到火灾人员安全疏散所需时间为1513 s。

The Urban Traffic Link Tunnel(UTLT) is a new type of underground transportation,with quite a few entrances to underground garages.It is more complicated to design the ventilation and smoke exhaustion for the UTLT than for a general urban straight tunnel.According to the structural features of the UTLT,the design method of ventilation and smoke exhaustion against UTLT fire is presented.The UTLT is regarded as an independent structure apart from adjacent underground garages in cases of fire.According to the layout of the ventilation shafts and the ground access,the UTLT is divided into multiple smoke control sections by the fire roller shutters.The fire smoke flows out of the ground following the travel direction in the limited smoke control zones.An UTLT is taken as an example,with eight sections and three smoke exhaust patterns.The smoke control effect of typical fire scenarios is simulated by FLUENT.The results show that the smoke is limited to the flow in the setting smoke control sections and can be exhausted out of the tunnel.And there is no back-layering flow of hot smoke,which can satisfy UTLT ventilation requirements and ensure the safe escape for people in the upstream of the fire and the vehicles in the downstream.So the design method of ventilation and smoke exhaustion against the UTLT fire is reasonable.The research results can be applied directly to the design of ventilation and smoke exhaustion for UTLTs.

In this paper,based on the ventilation and thermodynamic models,the software of CFD Airpak and multi-zone network simulation toolkit ContamW were used to carry out the natural ventilation optimal design of waiting room of Kunming south railway station.Better natural ventilation scheme was obtained by analyzing ventilation effects under different conditions.Furthermore,the influences of natural ventilation on annual energy-saving potential were also studied with the software of DeST.The results could provide guidance for the design of natural ventilation of railway station.

地铁列车是现代化城市交通极为重要的运输工具。为乘客提供舒适的内部乘车环境是对地铁列车的基本要求。评价环境舒适度的主要指标包括温度、湿度、风速、有效换气量以及空气品质等几个方面。因此应该安装通风—空调系统,以便对环境状态参数进行有效的调节。本文以深圳地铁一号线续建工程为例进行空调通风系统设计分析。