부산대학교 도서관

In natural environment such as dams and lakes, density stratification of the water is formed, and this may cause the destruction of water environment. We have developed the application of gas-liquid two-phase jet as the means of destruction and mixing of the density stratification. The purpose of this study is to clarify the mixing optimum by gas-liquid two-phase jet for destruction of density stratification. We conducted the mixing experiment and the experimental parameters were total superficial velocity j_T and volumetric flow ratio of the jet β. The mixing behaviors of density stratification was observed by visualization and density change in the mixing was measured in situ. Based on the visualized and measured results, an evaluation method for the mixing time was developed. We discussed the relation between the parameters and the mixing tune. It clarified that two behaviors were observed and effect of β on the mixing time was varied in eachy j_T.