基于贴附射流的空调房间飞沫气溶胶传播与控制机理研究

近些年来全球一系列的流行病爆发，严重急性呼吸系统综合症（SARS）和甲型H1N1流感、雾霾天气的蔓延对人们的呼吸健康，尤其是对公共场所安全带来的危害更大。研究表明，室内通风、空气流动和传染病的传播之间有着紧密的联系，人呼吸产生的飞沫气溶胶传递是流行病传播的重要途径，在房间设立空调通风系统是减少人与人飞沫气溶胶传染疾病的重要措施之一。本课题以基于贴附射流的空调房间为研究对象，构建多工况贴附射流碰撞分区理论模型，利用理论分析、实验测试、动态模拟计算等手段，研究贴附射流空气在诱导环境空气过程中形成特殊的局部气流分布特性，研究飞沫气溶胶颗粒在空调房间的流动规律，利用贴附射流控制人与人飞沫气溶胶在整体空间的分布，消除通过室内空气传播的传染病的感染风险，提高人们的呼吸健康和安全，课题成果为制定新型高效公共安全通风方案提供有效的数学模型和实验数据，为研发防范空气传播疾病的空调通风设备提供技术保障。

with the appearance of pandemic disease in recent years, quick spread of severe acute respiratory syndrome (SARS) and influenza H1N1 ，haze weather endangers not only people's breathing health but also public space safety. Research has shown that indoor ventilation and air flow are closely linked to spread of infection. Transfer of droplet aerosols from human breathing is an important way to spread epidemic, and setting up air conditioning system in room is one of important methods to reduce infectious disease among people by droplet aerosols. Taking a air conditioning room based on wall attached jet as research object, theory model of attached jet collision and division under multiple conditions is set up. Applying such means as theoretical analysis, field test and dynamic simulation, etc., the research focuses on special local air distribution characteristics of attached jet air while inducing the surrounding air and flow pattern of droplet aerosols particles in air conditioning room. The object is to control the whole space distribution of aerosol droplets utilizing attached jet, reduce infection risk of diseases transferred by indoor air and improve people's breathing health and safety. Research results could provide effective mathematical model and experimental data for making and using new and highly efficient ventilation plan for public safety, and offer technical support and theoretical basis for air conditioning and ventilation equipments preventing air-spread diseases.