等温気液二相流の差圧変動特性と流動様式の同定(熱工学,内燃機関,動力など)

抄録

The experiment of air-water isothermal two-phase flow in a vertical pipe was conducted by paying attention to the dynamic characteristics of flow pattern and its transition. Differential pressure fluctuation for bubble, slug, churn and annular flow were measured, and nonlinear characteristics of the flow were analyzed through the return maps on which the extreme values of the differential pressure fluctuation were plotted. It is found from the results that the distribution of the data points on the map differs markedly depending on the flow patterns. The characteristics of the flow configurations provide a criterion and a new identification method of flow patterns.