These are set in subroutine INIVST in the file GXKNVST.FOR, where they are given the values indicated in the table below:
| CMU | =0.5478 | CD | =0.1643 | C1E | =1.44 |
| C2E | =1.92 | EWAL | =8.6 | AK | =0.41 |
| CMUCD | =CMU * CD |
The user of a re-compilable version of PHOENICS may of course change the constants by editing, re-compiling and re-linking. However, PHOENICS versions 3.5 and later allow them do be changed by means of the In-Form REALREAD command.
The constants are used as follows, in coding to be found in GXPROP.F and GXWALL.F
CMUCD appears in the equation: