PRESSURE DROP AND VOID FRACTION EXPERIMENTS IN SIMULATED PATHFINDER BOILER FUEL ELEMENTS
A heat-transfer research and development program is being carried out in support of the Pathfinder boilingwater, integral-superheating reactor. Studies were made of the effects of tube-sheet type spacers on the axial pressure profile in a simulated fuel element. The effect of boiling on the frictional and spacer type pressure losses in a 6-ft long test section was measured. The void fraction in a test section was measured by a fine gamma-ray traversing technique. The flow downstream from a spacer quickly became established except near the bundle entrance. The local radial void distribution in boiling flow over a rod array was non-uniform with a uniform radial power distribution and the over-all integrated void fractions tended to support the homogeneous model. (M.C.G.)
- Research Organization:
- Allis-Chalmers Mfg. Co. Atomic Energy Div., Milwaukee
- NSA Number:
- NSA-17-022781
- OSTI ID:
- 4713053
- Report Number(s):
- ACNP-63002
- Country of Publication:
- United States
- Language:
- English
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