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Title: TOPAZ: The transient one-dimensional pipe flow analyzer: An update on code improvements and increased capabilities

TOPAZ is a ''user-friendly'' computer code for modeling the one-dimensional, transient physics of multi-species gas transfer in arbitrary arrangements of pipes, valves, vessels, and flow branches. This report, the fourth in a series of reports documenting TOPAZ, discusses coding improvements and the addition of new capabilities. These improvements make the current version of TOPAZ considerably more versatile than the original version which was distributed last year. For example, the new version does not restrict the user to modeling only hydrogen and helium isotope flows. Users now have the capability of modeling arbitrary gas mixture flows. In addition users may define time-dependent functions for mass generation, energy deposition, flow area, and maximum integration time step. Parallel flow paths and flows through channels having noncircular cross-sections may now be simulated. Improvements in TOPAZ mesh generation have been made which permit users to add additional ''plumbing'' to existing models without renumbering the mesh. 7 refs., 3 figs., 8 tabs.
Authors:
Publication Date:
OSTI Identifier:
6089068
Report Number(s):
SAND-87-8225
ON: DE88001781
DOE Contract Number:
AC04-76DR00789
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Research Org:
Sandia National Labs., Livermore, CA (USA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; COMPRESSIBLE FLOW; T CODES; FINITE ELEMENT METHOD; HEAT TRANSFER; HYDRAULICS; MESH GENERATION; ONE-DIMENSIONAL CALCULATIONS; PIPES; COMPUTER CODES; ENERGY TRANSFER; FLUID FLOW; FLUID MECHANICS; MECHANICS; NUMERICAL SOLUTION 420200* -- Engineering-- Facilities, Equipment, & Techniques; 990220 -- Computers, Computerized Models, & Computer Programs-- (1987-1989)