Abstract
This paper is concerned with a numerical analysis of behaviour of flow fields of a gas-solid particle two-phase fluid owing to an explosion of high-pressure dusty gas in an underground space.Asituation is considered where a high pressure gas is initially stored by a diaphragm in one closed end of a duct, and the other side of the diaphragm is open to a low-pressure gas. The gas-phase is treated as a continuum medium, and the particle-phase is treated as a discrete one. The particle cloud is divided into a large number of small subclouds. In each subcloud, the particles are approximated to have the same velocity and temperature. The particle flow field is obtained by following these individual subclouds separately in the whole computational domain.As soon as the diaphragm is broken, a-shock wave propagates into the low-pressure gas region and a blast appearing behind the shock wave exerts local aerodynamic force on the suspending particles. It has been demonstrated that particles also are transported to the low-pressure gas region. As a result, it has been found that a dense region of particles is formed between the shock front and the contact surface, while a dilute gas-particle mixture is left in the upstream region of the contact surface.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
