A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
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SamDle Problem 2b - ODtimization of a Multi-ADerture Cavitv Size<br />
Problem Statement<br />
Using the system optimized in Sample Problem 2a <strong>for</strong> cavity depth, optimize<br />
aperture dimensions, and then determine annual system per<strong>for</strong>mance and energy<br />
output. Flux on the receiver wall should be limited to 0.6 MW/m2.<br />
Input Cards<br />
SAMPLE PROBLEM 213<br />
$BASIC ITAPE-2 B<br />
PREC IREC=2. THT-180.. W=30.. IAUTOP-2. NUMCAV=4.<br />
RX=18.0.14.4,10.8.14.4. RY=18.0.14.4.10.8,14.4.<br />
RWCAV=1.0.0.75.0.5.0.75 $<br />
$OPT NUMTHT=4. THTST=160.. THTEN0=220.. NUMREC=5. WST=14.. WENOz22..<br />
NUMHTW-4. HTWST-0.75. HTWENO=1.5.<br />
NUMOPT=I. POPTMN=125.€+06, POPTMX=125.€+06, IPLFL=I. IOTAPE=l.<br />
IRERUN=1, ISTR=2. NSTR=11 $<br />
$NL.FLUX IFLX=I. NXFLX=5, FAZMINz90.. FAZMAX=270.. NYFLX=4, FZMIN=-7.08.<br />
FZMAX=12.72. NFLXMX=4. NMXFLX=3.8.13.18. FLXLIM=4*0.6€+06 ’%<br />
$NLEFF 3<br />
BNICOST CREC1=4.735E+06. ARECRF=1749. $<br />
$NLECON $<br />
PERFORMANCE RERUN<br />
$BASIC ITAPE=3. TOESP=125..<br />
$FIELO $<br />
SHSTAT 3<br />
BREC f<br />
IPROB=O $<br />
$NLFLUX IFLX=I. IFXOUT(3.1)=1 $<br />
$NLEFF $<br />
$REC W=-100. 3<br />
Analysis of Input<br />
As in Problem 2a, the per<strong>for</strong>mance data created in Problem la will suffice<br />
<strong>for</strong> initial per<strong>for</strong>mance input (ITAPE=2 in $BASIC$). The user must input on<br />
Namelist $REC$ the dimensions which were optimized in Problem 2a, specifically<br />
W. Values of THT, RX, and RY which are specified will not affect the system,<br />
since these variables are being optimized in this run. However, the parameters in<br />
$NLFLUX$ must be consistent with these values as defined in order to locate the<br />
flux map points in the correct positions. Also, a smart user would probably nar-<br />
row the range being optimized over <strong>for</strong> tower height and aperture width, based<br />
on the results from Sample Problem 2a. The aperture size variation is specified<br />
by selecting NUMHTW values of the first aperture height to width ratio from<br />
HTWST to HTWEND and by using the default value <strong>for</strong> IOPTUM. The other<br />
three apertures will be sized by the same ratio and by the relative size with re-<br />
spect to the first aperture given by RX2TRX, RXSTRX, and RX4TRX, or as<br />
defined by RX and RY values in $REC$ as done in this example. These should<br />
be kept the same as in Problem 2a. To save the optimization results on a file,<br />
the IOTAPE=l option is used. The storage optimization is flagged in Namelist<br />
$OPT$ (ISTR, NSTR) to look at 11 storage sizes varying from twice that <strong>for</strong><br />
the longest day to no storage. The actual optimization is not done until a final<br />
per<strong>for</strong>mance calculation. In this case, that calculation is part of the same job be-<br />
cause IRERUN=l is specified. Again, the four flux points along the centerline of<br />
the north cavity wall are tested <strong>for</strong> flux limits.<br />
213