抄録
Void fraction and frictional pressure loss were measured in gas-liquid two-phase slug flows in a horizontal micro tube of 200 gm in inner diameter. To measure the pressure loss of the flow, we did not use a pressure gauge but measured with the volume change of gas bubbles. As a result of void fraction, measured data of the gas phase average velocity got into a line in the diagram with total volumetric flux jr as an abscissa. It was thus found that the drift-flux is also effective for the slug flow in a micro tube. As for the frictional pressure loss, the Chisolm's parameter C, in L-M method correlation, was not so small as reported before for micro tubes but as large as the value in conventional pipes.
