Three Dimensional Numerical Analysis of Tunnel Inrushing Wave

点击翻译按钮获取中文摘要

When a high speed train inrushes a tunnel, pressure wave is emitted around the tunnel entrance as Tunnel Inrushing Wave. An objective of this research is to analysis influences on the emission of the wave by offset between the tunnel centre and rail way and by landform around the tunnel entrance. A three dimensional computer simulation system for analysis the objective was set up with CIP method. A simple model of emission by rush of high speed train into a tunnel was calculated by the system. The system split into fluid analysis system to simulate inrushing of train into tunnel and acoustic analysis system to simulate emission of inrushing wave. A difference of distance attenuation between a theory and results of simulation made clear that the systems have problems in conservation rule.