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Time marchingTime marching is determination of all needed variables at time step
as all
that variables are known at time step t. The varaibles can be divided into two
groups - those whose values at the next time step are determined immediately
using a system of differential equations (principal or primary variables) and
thos whose values are computed from the values of the primary variables and
needed for computation of the right hand sides of the differential equations for
primary variables (auxillary or secondary variables). Of course, some physically
important quantities can be also computed and output, which is not the problem
of integration.
ЕМНИП термин используется в вычислительной гидродинамике (CFD).
Да, Вы правы, оттуда.