Turbulent sweeping flow mixing model for wire wrapped LMFBR assemblies

Technical Report · Sun Oct 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6304126· OSTI ID:6304126

Chiu, C; Rohsenow, W M; Todreas, N E

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 of +- 35% is obtained over the assembly design range of 1.315 > P/D > 1.067 and 52 > H/D > 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: EY-76-S-02-2245
• OSTI ID: 6304126
• Report Number(s): COO-2245-55TR(Rev.1)
• Country of Publication: United States
• Language: English

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