厚い落下液膜流の発達過程における乱流特性 : 流体工学 , 流体機械

抄録

As a fundamental study for the free surface flow blanket of fusion reactors and the lithium target of a neutron source, the turbulence structure of a falling thick film flow with free surface was experimentally investigated. Velocity close to the free surface was reasonably well measured by processing velocity signal from the LDA. Turbulence damping near the free surface in the flow direction was quantitatively presented for the developing thick film flow. Turbulence enhancement near the free surface was observed when the insert of a thin plate was attached to an upstream inner wall surface. Specific profiles of skewness and kurtosis of velocity were observed when the insert was mounted in the upstream inner wall surface.