Host: The Japan Society of Mechanical Engineers
Name : Mechanical Engineering Congress,Japan
Date : September 11, 2016 - September 14, 2016
In this work, the effects of liquid viscosity on flow patterns, gas slug velocity, gas slug length 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 six kinds of liquids for the liquid mainly with different viscosity were used. Liquid kinematic viscosity of working liquids were ranging from twice to 10 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. In the correlation of L-M method, the effects of flow pattern transition from slug flow to disturbed ring film flow, and the superficial liquid velocity disturbed Ring film flow or two-phase multiplier became small with including liquid viscosities.In this work, the effects of liquid viscosity on flow patterns, gas slug velocity, gas slug length 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 six kinds of liquids for the liquid mainly with different viscosity were used. Liquid kinematic viscosity of working liquids were ranging from twice to 10 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. In the correlation of L-M method, the effects of flow pattern transition from slug flow to disturbed ring film flow, and the superficial liquid velocity disturbed Ring film flow or two-phase multiplier became small with including liquid viscosities.
