In this equation Ji is the diffusive flux,
u is the solvent velocity field, and
ST,i is the source term containing all sources of particles in interval
i. The above equation is the transport equation on nonconservative form. This is often more numerically robust and chosen by default. This formulation disregards density changes in the fluid. To switch between the two formulations, click the
Show button (
) and select
Advanced Physics Options.
