Dynamic absorption into simulated porous structures

作者: Cathy J Ridgway , Patrick A.C Gane

DOI: 10.1016/S0927-7757(02)00078-X

关键词: MechanicsWettingPorosityCalenderingPosition (vector)Particle-size distributionPorous mediumCoatingAbsorption (electromagnetic radiation)OpticsChemistry

摘要: Abstract A computer model, pore-cor 1 , has been used to simulate the permeation of fluid into porous structures by applying a wetting algorithm for fluids undergoing both inertial and viscous dynamical absorption. These comprise cubic pores connected cylindrical throats on three-dimensional 10×10×10 position matrix. Previously, void structure media fitting as closely possible simulated mercury intrusion curve model that experimentally determined actual sample. This refined was then absorption number different confirmation with experimental data, adopting same fluid, provided necessary confidence in model. Based this practical experience, framework is developed from comparison so can now be applied ‘predictor’ tool rather than simulator existing results. The here have generated aim isolating certain parameters their influence behaviour identified. It shown how, keeping porosity constant, represented ways these will vastly behaviour. Reducing value density simulation also investigated show where transition occurs linear t -dependent short timescale Bosanquet regime √ Lucas–Washburn (LW) regime. Such system connecting representative pigmented paper coating and, example, changing particle size distribution pigment under suitably modified calendering conditions, pore equal could exist practice drastically effects Implications on, say, way an ink would set surface, dramatic significance. To able predict design optimal inks variety printing, lacquering glueing processes seen significant advance, obviating need expensive matrix-designed production trialling.

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