EU Procédés 1. - 3PUJPRO1

Goal(s)

Describe and quantify material transport phenomena using a continuous media approach (instantaneous local fluxes and concentrations). Particular attention will be paid to the most common boundary cases in process engineering and electrochemical applications.

Content(s)

Mass transport section:
A Fundamental concepts
AI - Notion of molar and mass flow and volume balance. Analogy between heat flow and mass flow. Special case of stationary regimes.
AII - Decomposition of a mass flow into three contributions: diffusion, migration, convection (natural and forced).
AIII - Orders of magnitude in different media (solids, liquids and gases). Special case of binary mixtures and dilute solutions. Situation analysis: negligible or predominant terms / consecutive or competing phenomena (in series or parallel).
B Some important special cases
BI - Pure diffusion (Fick's laws). Some examples (stationary and transient) under different boundary conditions and geometries. In particular: constant flux / flux continuity / constant concentration / semi-infinite diffusion.
BII - Pure migration (Ohm's law). Primary current distribution in a conducting system. Application to different geometries.
BIII - Convective diffusion (Fick's law!). Principles of connection with hydrodynamics (Levich, Sherwood, etc.). Some examples: stagnant medium with binary mixing / film theory or Nernst model / double film model.

Basic knowledge of chemistry, particularly thermochemistry and chemical kinetics.