Mass Transport PDEs and Boundary Conditions

Mass transport is a discipline of chemical engineering that is concerned with the movement of chemical species. The two mechanisms of mass transport are mass diffusion and mass convection. The driving force behind a mass diffusion is the difference in a species concentration at different locations. Mass convection, on the other hand, only occurs when species are transported in a moving fluid medium. The combination of these two mechanisms leads to changes in the species concentration field over time and is modeled with a mass balance equation.


MassTransportPDEComponent model conservative and non-conservative mass transport

MassConcentrationCondition set a specific mass concentration on the boundary

MassFluxValue model mass flow through a boundary

MassImpermeableBoundaryValue model mass impermeable boundaries

MassOutflowValue model a mass outlet

MassSymmetryValue model a boundary with mirror symmetry

MassTransferValue model the effect of a reactive flow


Mass Transport monograph about modeling mass transport


Catalyst Deactivation perform a microscale simulation of a catalyst deactivation

Catalytic Converter model a catalytic converter

Gas Absorption model gas absorption

Thermal Decomposition model a chemical reaction where heat is a reactant

Tubular Reactor model the effect of temperature on a structure

Models Overview

Comparative overview of the mass transport models.

More examples for boundary conditions can be found on the respective reference pages.