Coolant mixing in LMFBR rod bundles and outlet plenum mixing transients. Progress report, March 1, 1978--May 31, 1978

Technical Report · Sun Jan 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6270974· OSTI ID:6270974

Todreas, N E; Golay, M W; Wolf, L

An optical technique has been developed for the measurement of the eddy diffusivity of heat in a transparent flowing medium. The method uses a combination of two established measurement tools: a Mach--Zehnder interferometer for the monitoring of turbulently fluctuating temperature and a Laser Doppler Anemometer (LDA) for the measurement of turbulent velocity fluctuations. The technique is applied to the investigation of flow fields characteristic of the LMFBR outlet plenum. The study is accomplished using air as the working fluid in a small scale Plexiglas test section. Flows are introduced into both the 1/15 scale FFTF outlet plenum and the 3/80 scale CRBR geometry plenum at inlet Reynolds numbers of 22,000.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Nuclear Engineering
• DOE Contract Number: EY-76-S-02-2245
• OSTI ID: 6270974
• Report Number(s): COO-2245-64
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ALKALI METALS
BREEDER REACTORS
CLINCH RIVER BREEDER REACTOR
CONVECTION
DATA
ELEMENTS
ENERGY TRANSFER
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FFTF REACTOR
FLOW RATE
FLUID FLOW
FUEL ASSEMBLIES
FUEL ELEMENT CLUSTERS
HEAT TRANSFER
INFORMATION
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MATHEMATICAL MODELS
METALS
MIXING
MOCKUP
NATURAL CONVECTION
POWER REACTORS
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH PROGRAMS
RESEARCH REACTORS
SIMULATION
SODIUM
SODIUM COOLED REACTORS
STRUCTURAL MODELS
TEMPERATURE DISTRIBUTION
TEST REACTORS
TURBULENCE