管路内での異種ガス混合に関する考察(<論文特集>安全安心シミュレーション)

概要

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There were various studies for the phenomenon of the gas mixing and the substitution that caused by the flow in the pipes since this phenomenon was studied by G. I. Taylor. It was difficult to examine the phenomenon of the gas mixing and the substitution of actual complex pipe lines systematically. This paper describes a situational method using experimental results for the change of the concentration of the gas by the gas mixing and the substitution in the actual complex pipe lines. The change of the concentration of the gas is measured by combining two flow meters of high-speed response with a different measurement principle. The phenomenon of the gas mixing and the substitution of actual complex pipe lines are approximated by one-dimensional transient convection-diffusion equation and the apparent axis diffusion coefficients are given by Reynolds number, average flow rate and diameter of pipe by corresponding to the condition of flow.
2007-12-15