通风系统风流稳定性分析的新方法

利用通风系统节点风流平衡关系和回路阻力平衡关系，分析了风网中各分支间基于空气动力学特征的制约关系，提出了某分支风阻、阻力发生变化时，其它分支的风量对此变化作出反应的分析模型，提出了抑制分支风量变化的控制模型，给出了度量反应敏感性强弱的方法。由于该模型可预先进行解算，解算结果对于风量调节具有很好的指导作用。

A New Approach for Analyzing the Airflow Stability in Ventilation System

Based on air dynamics characteristics, the constrained relationship among branches in underground wind network is analyzed with the nile of flow balance in nodes and pressure balance along circuits of ventilation system. Two models were put forward; one can be used to analyze the response of some other branches of airflow to the change in windage and resistance of one branch of airflow. Another can be used to constrain the variation of volume in branches. And methods to calculate the strength of sensitiveness were also given. Since models can be calculated in advance for ventilation network, they will be good guidances for the volume adjustment in ventilation network.