水平网络火灾旁侧支路风流逆转计算机模拟

Computer Simulation of Flow Reversal in Airway Parallel to Airway on Fire in Horizontal Air Network

通过定性分析和计算机模拟发现 :在水平网络火灾中 ,非角联旁侧分支也能发生风流逆转 ,引起逆转的动力是与该分支并联但与着火分支串联的分支中的冷抽力 .为加深对水平网络中非角联旁侧支路风流逆转机理的认识 。

A qualitative analysis and computer simulations show that airflow reversal can occur in a non-diagonal airway parallel to the airway on fire in a horizontal ventilation network due to the pressure increase induced by cooling of fume in the airway connected in parallel to the non-diagonal airway but in series with the one on fire. In order to gain a better understanding of the mechanism of airflow reversal in a non-diagonal airway of a horizontal network, the relationship and difference between the path integral of the convection item contained in the movement equation and the pressure increase induced by cooling of fume were discussed.