気液二相流に出現する波の特徴に対する液粘性の影響に関する研究 : 第2報, 団塊波とじょう乱波の出現領域及びこれらの波の特徴

In order to discriminate definitely between huge waves and disturbance waves appearing in the flows with liquid visosity of νl=1, 10 and 20cSt, a cluster analysis by K-mean algorithm was applied using wave width, wave velocity and wave height determined by wave-vein analysis. Appearance flow conditions of these waves were presented and flow patterns such as plug flow, huge wave flow and annular flow were determined. It is clarified that the appearance region of waves gets narrow with increasing liquid viscosity. Comparison of the present results with the flow map proposed by Furukawa et al. was made and it is clarified that froth-annular flow is the region of coexisting huge waves and disturbance waves. Wave width, wave velocity and wave height of huge wave and disturbance wave were determined and the effects of liquid viscosity on these flow parameters were found out.