Microgravity two-phase flow at a pipe junction
1996
Series of experiments were conducted to study two-phase gas liquid flow at a pipe junction (tee-junction) in reduced gravity. An air-water system was used for these tests. Properties of liquid was changed by adding glycerin or a surfactant. The experimental apparatus and procedure used for the study is described; observations made with flow visualization studies are presented. Quantitative measurements made to validate the experimental setup are also given. Preferential phase distribution at various fractional draw off values, pressure gradients before and after the pipe junction and pressure changes associated with the junction were measured. These results indicate the validity of the approach used to conduct these tests. Limitations of the present setup were also observed, and a number of changes that would improve performance and accuracy of measurements were identified. (Author)
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