Turbulent sweeping flow-mixing model for wire-wrapped LMFBR assemblies

Technical Report · Mon Dec 01 04:00:00 EST 1980

OSTI ID:5341198

Chan, Y N; Todreas, N

A physical model is proposed to derive the sweeping flow for LMFBR triangular array wire-wrapped assemblies under the turbulent flow condition. Two correlations are suggested for the sweeping flow through two different types of gaps between subchannels, the gap between the interior subchannels and the gap between the wall subchannels. These two sweeping flow correlations are evolved by calibrating the constants in the proposed model against the available experimental data. Agreement between the correlations and all the experimental data to +-35% is obtained over the assembly design range of 1.315 greater than or equal to P/D greater than or equal to 1.067 and 52 greater than or equal to H/D greater than or equal to 4. Based on these correlations, flow sweeping input parameters for two popular computer codes, i.e., COBRA and SUPERENERGY, are recommended.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Nuclear Engineering
• DOE Contract Number: AS02-76ET37240
• OSTI ID: 5341198
• Report Number(s): DOE/ET/37240-T3-Rev.2; COO-2245-55TR-Rev.2; ON: DE82007743
• Country of Publication: United States
• Language: English

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