Implementation of empirical total pressure loss data into the DUCTFLO and TOPAZ gas transfer codes
Sandia presently has two computer codes capable of modeling local pressure and enthalpy losses in lines connecting gas reservoirs and receivers. Each code conserves flow continuity, momentum, and energy as a function of position along the flow path. The first of these codes, DUCTFLO, models gas flow by solving a set of coupled algebraic equations. The DUCTFLO code has been formulated to make direct use of laboratory total pressure and enthalpy loss data. The second code, TOPAZ, models gas flow by solving a set of coupled ordinary differential equations using a conventional finite difference technique. The TOPAZ finite difference equations must be altered slightly in order to make use of laboratory total pressure and enthalpy loss data. In this report, methods for implementing empirical loss data in the two codes are discussed. In quasi-steady flow situations, it is shown that the two codes predict the same gas transfer for a given set of empirical loss data. This is demonstrated in an example problem consisting of a reservoir and receiver connected by a series of seven flow components each having unique loss characteristics. 11 references, 6 figures, 2 tables.
- Research Organization:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- DOE Contract Number:
- AC04-76DR00789
- OSTI ID:
- 6476880
- Report Number(s):
- SAND-84-8246; ON: DE85002309
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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