In Eq. (29), show that, in the limit as **c** approaches
infinity, the flux terms
on the right side of the equation become negligible.
Argue that if **c** is very large in a cell,
then the **U**-value in that cell remains essentially constant from time **j** to
time **j+1**.
This
computational technique of setting **c** to a very large value in a cell to
maintain a fixed **U**-value in that cell is referred to as ``blasting''.
Blasting is a very important tool in performance programming, since it can be
used to eliminate IF statements.