610 急拡大を伴う鉛直円管内の気泡流の液流速および乱流強度分布(GS-6 熱流動)

概要

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Experimental study was made on the multi-dimensional behavior of upward gas-liquid two-phase flow through a vertical pipe with an axisymmetric sudden expansion, which is one of the typical multi-dimensional channel geometries. In this study, the liquid velocity and turbulent intensity along the flow direction at the below and above of the sudden expansion were measured by using a hot-film anemometer for various flow conditions. The development of the liquid velocity and the turbulent intensity along the flow direction of the downstream of the sudden expansion showed quite complicated behaviors depending upon flow rates of gas and liquid phases and bubble size. These results would become significant data for the development of multi-dimensional analysis in two-phase flow.
2004-03-17