The estimation of the air behavior in the tunnel by using ventilative simulation

Abstract

If booster is set not so far from the entrance of tunnel to ventilate smoke at the fire in the tunnel, there may be some influence in the booster power because of the contracted flow and the length of boosting pressure. Some of the representative way to investigate those subjects are the spot and the model experiments. But there are some problem in those way.
In recent years, the simulation tends to be adopted from these reasons. However, the technique of the condition setting isn't sometimes established, there are not so many case studies. This report shows the examination results about the air behavior in the immerset tunnel, which is set booster at the 90 m position from the portal, and modeling with setting conditions for simulation.