Fluid-mixing studies in a hexagonal 37-pin wire-wrapped rod bundle. [LMFBR]
Flow-split, pressure-drop, and mixing experiments were performed on a 37-pin LMFBR rod bundle with a P/D = 1.154 and H/D = 13.4 to verify the Chiu-Hawley-Burns correlations and to supplement the existing data base. The isokinetic extraction method, pitot-static probe pressure-measurement method, and salt-tracer-injection method were used for these experiments. The experimental results of the turbulent-flow-split parameters were predicted by the correlations within 3%. However, significant discrepancy between data and correlation existed in the transition flow regime (Re/sub b/ < 10,000). Flow-split parameters for Re/sub b/ < 3000 were not attainable because of the restriction of the isokinetic extraction method. The friction factor results showed a smooth transition from the laminar-flow regime to turbulent-flow regime. They were slightly overpredicted by the correlations, especially in the laminar-flow regime. The local swirl-flow ratio, C/sub IL/, in the turbulent-flow regime was found to be about 0.28, which was within 10% of the correlation value 0.265.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Nuclear Engineering
- DOE Contract Number:
- AC02-76ET37240
- OSTI ID:
- 6671140
- Report Number(s):
- DOE/ET/37240-96-TR; ON: DE83003908
- Country of Publication:
- United States
- Language:
- English
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