These tunnels have been equipped with the advanced jet and axial shaft ventilation systems, and alarm and monitoring systems. And also a new light source has been employed.
隧道内采用橡胶防水板防渗漏，设置先进的射流和轴流竖井通风系统，配有报警监控系统，采用新光源照明。
2
Simulation results shown that the jet velocities of gas and particle phases, and concentration decreased along both the radial and axial directions.
模拟计算表明气固两相射流速度沿轴向和径向减小，颗粒浓度下降。
3
A visualization experimental study has been conducted of the aerodynamic field of a co axial swirl jet burner.