GAS-LIQUID BUBBLY FLOW IN VERTICAL PIPES V.E.Nakoryakov, O.N.Kashinsky, V.V.Randin, L.S.Timkin Upward laminar bubble flow data files. Ul - superficial liquid velocity B - volumetric gas flow rate ratio Db - mean bubble diameter file name Ul(m/s) B Db(mm) UB101 0.207 0.02 2.1 UB102 0.207 0.1 2.2 UB103 0.207 0.2 2.1 UB104 0.44 0.02 1.9 UB105 0.44 0.1 2 UB106 0.44 0.2 2.4 UB107 0.44 0.02 2 UB108 0.44 0.1 3.7 UB109 0.44 0.2 3.6 Data files are presented in ASCII format. Data in the files are space separated. In the data files: Y - distance from the wall (mm) FI - local void fraction U - liquid velocity (m/s) U2 - mean square of liquid velosity fluctuations (m/s)**2 Liquid temperature was 20 deg C, liquid density - 1127 kg/m**3, liquid viscosity - 3.5*10**-6 m**2/s Air was used as gas phase.