开门方式对开门气流影响的二维数值模拟
Two-dimensional numerical simulation of impacts of door opening modes on airflow
摘要：
建立了隔离病房的二维简化模型，利用动态网格技术模拟了门旋转开启（向病房内开启和向病房外开启）和推拉开启两种模式下，开门过程中病房内外的压力变化和通过门框的气流流动状态。结果显示，推拉开启对门周围气流的影响最小；门向病房内开启时，门刚开启阶段引起病房内压力增大，造成病房内污染空气外泄；门向病房外开启时，靠门运动的引带作用将病房内的污染空气带出。建议采用推拉开启，对不能使用推拉门的场合，门应开向污染区域。
Abstract：
Establishes a two-dimensional simplified model of isolation ward. Utilizes the dynamic-mesh technique to simulate the pressure changes occurring inside and outside the ward and the airflow passing through the door case while the door is opened in two modes i.e. swing (inward and outward) and sliding. The results show that the sliding opening mode has the minimum impact upon the airflow passing through the door case; inward swing-door may cause pressure in the ward to increase in the beginning with door opening, which brings about contaminated air leaking out; while outward swing-door may drive contaminated air out of the ward due to the inducing effect of door leaf motion. Concludes that the sliding opening mode is preferable and that inward swing-door is recommended when a sliding door cannot be used.
Keywords:door opening mode, two-dimensional model, isolation ward, swing door, sliding door, pressure, airflow