Hydrogen Mixing Studies (HMS) assessment manual

Technical Report · Tue Jun 01 04:00:00 EDT 1993

DOI:https://doi.org/10.2172/10176723· OSTI ID:10176723

Lam, K L; Wilson, T L ^[1]; Travis, J R ^[2]

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1. Los Alamos National Lab., NM (United States)
2. Science Applications International Corp., Albuquerque, NM (United States)

This report documents some calculations performed to assess the Hydrogen Mixing Studies (HMS) code. Results are presented first for some analytical test problems, including laminar flow and mass diffusion. The von Karman vortex street problem and the Sandia FLAME Facility and Heiss Dampf Reaktor (HDR) containment facility test problems are then discussed. For the analytical problems, the code gave results that agree exceptionally well with the analytical solutions. Calculations for the von Karman vortex street problem were performed at selected Reynolds numbers for several obstacle types. The computed flow patterns agree well with experimental observations-specifically the occurrence of a vortex street (double row of vortices) above a critical Reynolds number. Calculations for the von Karman vortex street problem were performed at selected Reynolds numbers for several obstacle types. The computed flow patterns agree well with experimental observations-specifically the occurrence of a vortex street (double row of vortices) above a critical Reynolds number. The last assessment problem involves modeling the experiment T31.5. The experiment was carried out in the HDR containment building, which is a large, multi-compartment facility (11 300 m{sup 3} free volume in 72 compartments). In the experiment, a steam-water mixture was first injected into the containment to simulate a large-break blowdown of a pressure vessel, and then superheated steam was injected that was followed by a release of helium-hydrogen light gas. The calculated results (pressure, temperature, and gas concentrations) agree reasonably well with the experimental data.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (United States). Div. of Systems Research; Los Alamos National Lab., NM (United States)
• Sponsoring Organization: Nuclear Regulatory Commission, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10176723
• Report Number(s): NUREG/CR--6060; LA--12593-M; ON: TI93017872
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800
99 GENERAL AND MISCELLANEOUS
990200
BLOWDOWN
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY
COMPONENTS AND ACCESSORIES
COMPUTERIZED SIMULATION
CONTAINMENT SYSTEMS
DIFFUSION
H CODES
HYDROGEN
LAMINAR FLOW
MATHEMATICS AND COMPUTERS
MIXING
NUCLEAR POWER PLANTS
TURBULENT FLOW