At the Mont Terri Underground Research Laboratory (Switzerland), a field-scale investigation has been conducted in order to investigate the hydro-mechanical and chemical perturbations induced in the argillaceous formation by forced ventilation through a tunnel. this experiment has been selected to be used for processing model development and validation in the international project DECOVALEX-2011. the conceptual and mathematical representation of the engineered void, which itself forms a major part of the experiment and is not simply a boundary condition, is the subject of this paper. A variety of approaches have been examined by the contributors to DECOVALEX and a summary of their findings is presented here. Two major aspects are discussed. Firstly, the approaches for the treatment of the surface condition at the porous media/tunnel interface are examined, with two equivalent but differing formulations successfully demonstrated. Secondly, approaches for representing the tunnel with a...

对某城市隧道采用自然通风方案和三种机械通风方案进行了介绍，指出了机械通风常见的问题并提出了解决方案，通过评估发现这样能够节能35%-45%。从经济性角度对四种通风方案进行了对比，所得结论是采用自然通风方案总投资可以节约30%左右，具有显著的经济效益。最后对四种方案进行了综合比较，为公路隧道通风工程的设计提出了合理的建议。

对多元通风的概念及研究现状分别进行了阐述。根据长江流域气候特点，运用Fluent软件对株洲地区某房间采用多元通风系统的6种典型通风方式在过渡季节或夏季典型气象条件下的气流参数分布情况进行预测分析，验证了在长江流域气候条件下应用多元通风系统具有很大优势。

向室内引入新风是解决由装修材料加工工艺导致室内甲醛超标问题的根本方法之一。为了研究不同通风方法的有效性，本文利用Fluent软件，对自然通风和机械通风效果进行研究并分别分析不同送风口温度和不同送风速度对室内不同高度位置处的甲醛浓度的影响。模拟结果表明：自然通风工况下，不同送风温度下的甲醛浓度均超标，机械通风工况下，不同送风速度下的甲醛浓度均未超标；当进风口速度为2m/s时，甲醛浓度最低；通过数值模拟，同一送风温度下，自然通风甲醛的浓度是机械通风的2.07倍。本文将模拟的2种工况在沈阳、营口进行实测，试验结果与模拟结果基本一致，进一步验证了该结论。