VIEW FOR THE VAX

The calculation of the radiation exchange between two gray, diffuse
surfaces by the usual engineering method presents difficulties since it
requires a full and precise description of both surfaces. Often the major
difficulty in calculating the heat transfer rests with the accurate
determination of the surface conditions. For multi-surface enclosure
problems, or for radiation between surfaces whose mutual views are
obstructed, the evaluation of the view factor is a major effort. For many
situations, as in spacecraft or space structures, solar receivers, or
industrial furnaces, estimates using graphical and numerical techniques
are not adequate. Furthermore, in structures for which the changing
position of the sun leads to different surfaces becoming radiantly
important at different times, accurate determination of the viewfactor for
all surfaces is particularly important. The family of computer codes,
VIEW, has been created to accomplish this task. VIEW, developed for NASA
Langley Research Center, is an interactive program that determines the
viewfactors, graphically displays surfaces, and evaluates the solar
irradiation of an assemblage of surfaces.

The VIEW programs are available in two machine versions. The programs
included in the IBM PC version of VIEW are written in FORTRAN 77,
C-language and Assembly language for the IBM PC and compatibles. The
programs included in the DEC VAX VMS version are written in FORTRAN 77.
The graphic routines in the PC version require an EGA or VGA card, while
those in the VMS version require a Tektronix 4010 display, a single pen HP
plotter or a vtl25 terminal. The memory requirement for the IBM PC version
is 412K. For the VMS version, 1MB of RAM is required. The standard
distribution medium for the PC version, inventory number LAR-14217, is a
set of eleven 360K diskettes in MS-DOS format. The standard distribution
medium for the VMS version , LAR-14468, is a 1600 BPI 9-track magnetic
tape in DEC VAX BACKUP format. The VMS version is also available on a TK50
tape cartridge in DEC VAX BACKUP format. Program $3,000; documentation
$56.

COSMIC, The University of Georgia
382 East Broad St, Athens, GA 30602-4272
(706) 542-3265;  Fax: (706) 542-4807

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