Study on the Unsteady Piston-wind in Vertical Draft Equipped with Hoisting Container

摘要

For the vertical shaft equipped with hoisting containers,the ventilation was severely affected by the movement of hoisting containers,and the airflowbelonged to unstable flow.Based on the theory of aeroclynamies,air movement in vertical shaft equipped with hoisting containers was analyzed in this paper.The physical and numerical model were set up accordingly,theoretical analysis and numerical simulation were carried out on the piston wind generated byhoisting containers.The findings indicated that,during the process of the movement of hoisting containers,impacted by the piston effect generated by hoistingcontainers,air movement changes continually,air flows unsteadily,velocity field around hoisting containers change intensively,then results in considerableinfluence to ventilation system,especially the ease in which hoisting container moves upwind.