The National Bureau of Standards Parahydrogen Properties Database (NBS+
PH2) program was developed to provide selected parahydrogen thermal and
transport properties which match the 1981 NBS parahydrogen data. The
program was created to be linked with propulsion simulation programs which
require a parahydrogen model which can cover a wide range of pressures.
NBS+ PH2 can provide data on parahydrogen for pressures from 1E4 to 1.6E7
Pa and temperatures from 20 degrees to 10000 degrees K. NBS+ PH2 can
provide the following parahydrogen properties: density, thermal
conductivity, viscosity, Prandtl number, enthalpy, specific heat, and
speed of sound.

NBS+ PH2, LEW-15505, is a database program written in FORTRAN 77 and is
designed to be machine independent. Although a user-interactive test
program for accessing NBS+ PH2 is provided in the distribution package,
NBS+ PH2 is intended to be linked with simulation programs. The database
and interactive test program have been used successfully on a Sun4 series
computer running UNIX, an IBM PC series compatible computer running MS-DOS
(using Lahey F77L), and a DEC VAX running VMS. The standard distribution
medium for this program is a 5.25 inch 360K MS-DOS format diskette. The
contents of this diskette are compressed with the PKZIP archiving tools.
The program to uncompress the files, PKUNZIP.EXE, is included on the
diskette. A sample MS-DOS executable is provided. NBS+ Ph2 is also
available on a .25 inch streaming magnetic tape cartridge in UNIX tar
format and a 9-track 1600 BPI magnetic tape in DEC FILES-ll format.
Documentation is included in the price of the program: $150.

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

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