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

IFOCUS
XFoCALIKl
YFOCAL K
(K=l, NHAD)
INDC
ISB
Default: XFOCUS = 1.0 (II.D-2,II.D-3)
YFOCUS = 1.0
Types of focusing:
-- 0, individtral focus with focal length equal to the slant
range;
== 1, user defined focal length determined by XFOCAL
and YFOCAL if zoning is used or focal length
read off of individual heliostat data cards if
this is an individual heliostat field (IUSERF = 3,
Namelist FIELD); (can be used to produce a single
focal length for the whole field).
Constraint: XFOCUS = YFOCUS = 1.0
Default: IFOCIJS = 1 (1I.D-2,11.D-3)
User defined focal lengths for the Kth radial zone (note:
the focal length = 1/2 radius of curvature ; XFOCAL(K) is
the focal length in units of tower heights / THT in
namelist REC) in the I,, direction and YFOCAL(K) is in the
j,, direction.
Default: XFOCAL = 13*6.00
YFOCAL = 13r6.00 (11. D-2 ,II. D-3)
Control parameter for more accurate heliostat images
during performance only calculations:
= 0, regular images;
= 1; separate image generated from each cant
panel instead of a single image from the whole
heliostat. This significantly increases the
running time. This option can only be used with a
performance calculation and cannot be used in
design optimization calculations.
Constraint: INDC = 0 for a design calculation
IAUTOP = 0 (Namelist REC) if INDC = 1
ICANPL = 1 if INDC = 1
Default: INDC = 0 (1II.F-1 ,VI.A-5)
Parameter controlling overlapping of shadowing and
blocking:
= 0, no overlap. Most conservative assumption
as shading and blocking losses are maximized.
= 1, complete overlap. Lower bound on shading and
blocking losses.
Default: ISB = 0 (1II.E)