Beschreibung
Inhaltsangabe1 Principles and General Equations.- 1.1 Transport of Liquid Through a Solid.- 1.1.1 Polymers.- 1.1.2 Wood Materials.- 1.1.3 Basic Equations of Diffusion (Fick's Laws).- 1.2 Evaporation of Liquid from the Surface.- 1.2.1 Infinite Rate of Evaporation.- 1.2.2 Finite Rate of Evaporation.- 1.3 Diffusion of Vapour Outside the Solid.- 1.4 Effect of Parameters.- 1.4.1 Dimensions of the Grain.- 1.4.2 Nature of the Solid and Liquid.- 1.4.3 Shape of the Solid.- 1.4.4 Surrounding Atmosphere.- 1.4.5 Temperature.- 1.5 General Equations.- 1.5.1 Operational Conditions.- 1.5.2 Differential Equation of Diffusion.- 1.5.3 Equation of Evaporation.- Symbols.- 2 Thin Plane Sheet.- 2.1 Non-steady State with Infinite Rate of Evaporation.- 2.1.1 Infinite Atmosphere with Uniform Initial Concentration of Liquid.- 2.1.2 Layer of Diffusing Substance Deposited on a Permeable Sheet.- 2.1.3 Layer of Diffusing Substance Located Between Two Permeable Sheets.- 2.1.4 Finite Atmosphere with Constant Diffusivity.- 2.2 Non-steady State with Finite Rate of Evaporation.- 2.3 Membrane Suspended in an Infinite Atmosphere.- 2.3.1 Transient Conditions with Infinite Rate of Evaporation.- 2.3.2 Steady-State Conditions with Infinite Rate of Evaporation.- 2.3.3 Composite Membrane Under Steady-State Conditions with Infinite Rate of Evaporation.- 2.3.4 Steady-State Conditions with Constant Concentration on One Surface and Finite Rate of Evaporation on the Other.- 2.4 Conclusions.- 2.4.1 Edge Effects.- 2.4.2 Constant Diffusivity.- 2.4.3 Effect of the Volume of the Surrounding Atmosphere.- 2.4.4Effect of the Rate of Evaporation.- Appendixes. Methods of Solution of Fick's Law When the Diffusivity is Constant.- 2. A Separation of Variables.- 2.B Diffusion-Evaporation From a Plane Sheet of Thickness L, with Infinite Rate of Evaporation.- 2.C Half-Life of Desorption Process.- 2.D Reflection and Superposition.- 2.E Error Function.- 2.F Layer of Diffusing Substance on a Permeable Sheet, with Infinite Rate of Evaporation.- 2.G Membrane with Constant Concentration on Each Surface, and Infinite Rate of Evaporation.- Symbols.- 3 Cylinder.- 3.1 Solid Cylinder of Infinite Length, Non-steady State with Constant Diffusivity.- 3.1.1 Infinite Atmosphere with Infinite Rate of Evaporation.- 3.1.2 Finite Atmosphere with Infinite Rate of Evaporation.- 3.1.3 Infinite Atmosphere with Finite Rate of Evaporation.- 3.2 Cylinder of Finite Length, Non-steady State.- 3.2.1 Infinite Atmosphere with Infinite Rate of Evaporation.- 3.2.2 Infinite Atmosphere with Finite Rate of Evaporation.- 3.3 Liquid-Filled Hollow Cylinder of Infinite Length, Steady State.- 3.3.1 Infinite Atmosphere with Infinite Rate of Evaporation.- 3.3.2 Infinite Atmosphere with Finite Rate of Evaporation.- 3.4 Conclusions.- Appendix. Radial Diffusion in a Solid Cylinder of Infinite Length with Infinite Rate of Evaporation.- 4 Sphere.- 4.1 Solid Sphere, Non-steady State with Infinite Rate of Evaporation.- 4.1.1 Infinite Atmosphere.- 4.1.2 Finite Atmosphere.- 4.2 Solid Sphere, Non-steady State with Finite Rate of Evaporation.- 4.3 Liquid-Filled Hollow Sphere.- 4.3.1 Non-steady State with Infinite Rate of Evaporation.- 4.3.2 Steady State with Infinite Rate of Evaporation.- 4.3.3 Steady State with Finite Rate of Evaporation.- 4.4 Conclusions.- Symbols.- 5 Numerical Analysis for a Plane Sheet.- 5.1 Infinite Rate of Evaporation.- 5.1.1 Constant Diffusivity.- 5.1.2 Concentration-Dependent Diffusivity.- 5.2 Finite Rate of Evaporation.- 5.2.1 Constant Diffusivity.- 5.2.2 Concentration-Dependent Diffusivity.- 5.3 Conclusions.- Symbols.- 6 Numerical Analysis for a Cylinder.- 6.1 Solid Cylinder of Infinite Length with Infinite Rate of Evaporation.- 6.1.1 Constant Diffusivity.- 6.1.2 Concentration-Dependent Diffusivity.- 6.2 Solid Cylinder of Infinite Length with Finite Rate of Evaporation.- 6.2.1 Constant Diffusivity.- 6.2.2 Concentration-Dependent Diffusivity.- 6.3 Solid Cylinder of Finite Length with Infinite Rate of Evaporation.- 6.3.1 Constant
