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1報, 団塊波とじょう乱波の特徴

概要

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Measurements of time-varying spatial liquid holdup distributions and interfacial profiles were carried out for the transition flow region between plug and annular flows using the liquid with three types of liquid viscosity ν_ι=1, 10 and 20 cSt. Time-spatial maps of interfacial behavior were drawn and close inspection revealed that two types of waves appeared for each liquid viscosity, namely one is disturbance wave with small height, width and velocity. The other is huge wave with large height, width and velocity. Furthermore, it was clarified that no wave continuing in the measuring section appears in higher gas velocity and lower liquid velocity conditions for ν_ι=10 and 20 cSt and the interface was covered with ripple waves. To clarify the differences between huge wave and disturbance wave definitely, a wave vein analysis was carried out. Probability distributions of these flow parameters were determined. The characteristics in these probability distributions revealed that two types of distributions existed for both of wave width and velocity and these distributions corresponded to those of huge wave and disturbance wave, respectively.
一般社団法人日本機械学会の論文
1999-03-25