A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...

The namelists should be ordered as described in Appendix A. This file is only
read by DELSOL.
VLA-2, Output File (Unit 6)-This file is a formatted file, created by DEL-
SOL, which contains all of the standard output from a DELSOL execution. Sam-
ples of the type of information contained in this file are shown in the outputs to
sample problems in Appendix B. DELSOL only writes, and does not read, this
file.
V1.A-9. Interactive File (Unit I)-This file is a formatted file which can be
used to provide limited output to a computer terminal screen during job execu-
tion. DELSOL uses this file in an interactive mode when interactive user aiming
of heliostats is being performed (Section 1I.F-6). The file could also be used for
such things as repeating input back to the screen or to output error or termina-
tion messages that also were written to Unit 6. The user should take the appro-
priate steps to make sure this file is printed to a terminal screen.
VI.A-4. Initial Performance File (Units I0 and ZO)-This file is an unformat-
ted file which is written by DELSOL (Unit 10) if requested at the end of an ini-
tial performance calculation, and which can be read by DELSOL (Unit 20) at
the start of any future optimization calculations. This is a useful option, since
it may be desirable to use the same initial performance calculation for several dif-
ferent design optimizations. This can result in significant savings in computer
time. However, the user should be certain that a performance calculation which
has previously been saved on Unit 10 has the same site characteristics, heliostat
zoning (including north vs. surround field), heliostat design, and approximate
tower height as is desired for the new optimization calculation. Otherwise, a new
initial performance calculation will be required.
Figure VI-1 illustrates the options for the initial performance calculations. In
all cases the first Namelist, BASIC, is read from Unit 5. The value of the variable
ITAPE in that Namelist determines which branch is followed. If ITAPE=O the
remaining performance Namelists are read in, the performance calculation is ex-
ecuted, and then the code begins reading in the optimization Namelists, without
writing to Unit 10. If ITAPE=l, the remaining performance Namelists are also
read in and the performance calculation is executed. However, in this case the
performance is written to Unit 10, and then the code begins reading the optimiza-
tion Namelists. (Setting W