Laminar flow of a wetting liquid along the corners of a predominantly gas-occupied noncircular pore

摘要: Abstract The problem of low Reynolds number wetting liquid flow in a noncircular capillary occupied predominantly by nonwetting gas phase is separated into individual corner problems and solved numerically. solution presented terms dimensionless resistance, β, which tabulated as function geometry (half angle degree roundedness), surface shear viscosity, contact angle. effect to change the cross-sectional area available for flow, while viscosity affects boundary condition at gas-liquid interface. resistance shown increase with increasing half angle, roundedness, Finally, it demonstrated htat error resulting from use hydraulic-diameter approximation on order 50% or higher.