マイクロチャンネル内気液二相流の流動現象に及ぼす液物性の影響

抄録

In this work, the effects of liquid viscosity on flow patterns, gas slug velocity, liquid slug length, void fraction and friction pressure drop of two-phase flows in a horizontal circular microchannel with an inner diameter of about 530 μm have been reported. In the experiments, as the working fluids, nitrogen gas for the gas and seven kinds of liquids for the liquid mainly with different viscosity were used. Liquid kinematic viscosity of working liquids were ranging from twice to 20 times than that of distilled water. The gas slug velocity for the case of nitrogen distilled water coincided with homogeneous flow velocity and for high viscosity liquids it gave higher values than that of Hughmark's equation.