Non-Condensable Gases in RELAP-7
This report considers how the model PDEs in RELAP-7 can be amended to account for the presence of non-condensable gases (NCGs) in the flow system. Let the number of NCGs be denoted by $$N_{NCG}$$. The primary (and condensable) vapor, e.g., steam, will be referred to as the “primary vapor” and will have the subscript “$$v$$; 0”, and the other constituents are assumed to be non-condensable and will be referred to as “NCGs” and will use the subscript “$v; i$”, with $$i$$ = 1$$,...,N_{NCG}$$. Mixture quantities will use the subscript “$$v$$” (without any numeric index). Before distinguishing between condensable and non-condensable gases, the mixture equations are derived generally; there the mixture components are just referred to as “species” and will just have a subscript “$$i$$” instead of the corresponding vapor subscript “$v; i$”. The total number of species is denoted by $$N_{species}$$.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC07-05ID14517
- OSTI ID:
- 1498114
- Report Number(s):
- INL/EXT-18-51163-Rev000
- Country of Publication:
- United States
- Language:
- English
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