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Air Ring Effect on Blown Film Dynamics
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1989
Year
Unsteady FlowAir Ring EffectEngineeringBubble DynamicAerospace EngineeringAir RingFluid MechanicsMechanical EngineeringNumerical SimulationBlown Film DynamicsGas DynamicMomentum MacrobalanceAerodynamicsVortex Induced VibrationVortex DynamicApplied Aerodynamics
Abstract The air ring has an effect on blown film dynamics. By using a momentum macrobalance, an analytical solution for the pressure on the outer surface of the bubble is obtained which is in fairly good agreement with our aerodynamic experimental data. Since the pressure is related to the hoop stress, a more complete prediction of the bubble shape is attained by taking the air ring effect into account.