Here,
is the boundary value of the quantity, which is a solution
variable, whereas (5.19) is used as constitutive relation for the actual
flow over the boundary *F*_{C}.

_{B} reads, again for two example grid points *i*_{1} and *i*_{2}

t_{x, y} |
F_{C} |
||

F_{C} |
1 | 1 |

The rows for
and
are zero since substitute equations
will directly be provided in the boundary matrix
_{B}.

1999-05-31