142 ヘリウム・空気置換流の流量測定と傾斜管内の流れの可視化

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. Smoke wire method was applied to visualize the flow in the tube, and compered with the mass change method.