Study on flow rate of helium-air exchange flow through a tube. 2

This paper deals with experimental investigation on buoyancy-driven exchange flow through an inclined tube. The effect of the density at the tube top end and density difference between light and heavy gases on exchange flow rate were investigated and discussed then selected parabolic flow model of 3D analysis. Smoke wire method was applied to visualize the flow in the tube, and compared with the results of 3D analysis using the data of mass change method. (author)