2 Phase Fluid

Two Phase Flow - Beggs & Brill Method

CheCalc.comLine NumberP-10001Chemical Engineering CalculationsDescriptionFeed PipeDate11-May-15User Input ByCheCalcPipe DataMetricEnglish Inner Diameter50.67mm1.995inchPipe Roughness0.00180mm0.000071footPipe Length100.00m328.084footFlow DirectionuphillPipe Inclination angle 90 with horizontal GasFlowing Temperature32.2Deg C90.00Deg FInlet Pressure119bar1719.7psiVolumetric flowrate9.0m3/h5.31ft3/min@ Standard Conditions944.9Nm3/h @ 1 atm, 0C587.6SCFM @ 14.7 PSI, 60FDensity141.3Kg/m38.823lb/ft3Viscosity0.020cP1.34E-05lb/ft.sLiquidVolumetric flowrate4.75m3/h20.916US gpmDensity613.8Kg/m338.320lb/ft3Viscosity0.500cP3.36E-04lb/ft.sgas/liquid Surface tension28.0dyne/cmResultsFlow pattern mapIntermittentPressure drop due to headHoldup volume fraction, EL(0)0.4620.462Inclination correction factor, 1.0551.055Inclined holdup v.f, EL()0.4870.487Mixture density371.61Kg/m323.20lb/ft3DP due to Head3.64bar52.85psiPressure drop due to frictionFriction factor ratio1.4451.445No Slip Reynold's Number157713157713No Slip friction factor, fNS0.0042Fanning0.0042FanningTwo phase firction factor, fTP0.0060Fanning0.0060FanningDP due to friction0.26bar3.77psiTotal pressure drop3.90bar56.62psiCorrection due to acceleration0.9890.989Corrected Total Pressure drop3.95bar57.23psiPressure drop / Length3.95bar / 100 mt17.44psi / 100 ftCalculation (In English Units)Area of Pipe0.0217ft2Gravity constant, g32.174ft/s2LiquidGasFlowrate0.0466000002ft3/s0.08855ft3/sSuperficial Velocity2.147ft/s4.079ft/sWeight Flux, G82.26lb/ft2.s36.0lb/ft2.s

Mixture Velocity, Vm6.23ft/sLiquid Hold up, CL0.345Froude Number, Fr7.25Mixture Viscosity, m1.25E-04Mixture density18.99lb/ft3Flow Pattern MapCheck Flow regimesL1*229.1043SegregatedFALSEL2*0.0128IntermittentTRUEL3*0.4691DistributedFALSEL4*652.8663TransitionFALSESelected flow regimeIntermittent

Hydrostatic pressure differenceLiquid Holdup Volume Fraction Horizontal Flow EL(0)Segregated0.4926A-14.85Intermittent0.4619B15.85Distributed0.5077Selected0.4619Check for if greater than CL0.4619Liquid Holdup Correction FactorLiquid velocity number, Nvl4.50Flow direction option menuuphillCorrection factor, downhillUphill FlowSegregated1.0669Intermittent0.1844Distributed0.0000Downhill FlowAll Flow regimes0.7380Selected0.1844Check for negative values0.1844

Inclination angle, 1.57radiansB()1.055Liquid Holdup EL()EL(0)B()EL()For Transition flow-1.9257006375Segreg.0.49261.06691.3190.650Selected for transition flow0.3448Intermit.0.46190.18441.0550.487Selected Liquid holdup0.4874

Two phase density23.20lb/ft3DP due to hydrostatic head52.85psiPressure drop due to friction lossFriction factor ratioy1.4517ln(y)0.3727S0.3680S final0.3680Friction factor ratio, fTP/fNS1.4448No Slip Reynolds number157713

Friction factor estimate using Colebrook White equationEpsilon / D3.6E-05Re157713Iteration123456f0.00040.02610.01590.01670.01660.0166Iteration789101112f0.01660.01660.01660.01660.01660.0166Iteration131415161718f0.01660.01660.01660.01660.01660.0166Fanning friction factor0.0042Two phase friction factorft0.006DP due to friction loss3.77psiTotal pressure drop56.62psiCorrection factor due to accelerationEk0.011Total pressure drop57.23psi