Flow patterns in high pressure two-phase flow: a visual study of water in a uniformly heated 4-rod bundle (LWBR Development Program)

Technical Report · Sat Nov 01 04:00:00 EST 1975

OSTI ID:4129022

Williams, C L; Peterson, Jr, A C

Flow patterns that occur in a rod bundle with forced upward flow of boiling water have been photographed. The experimental rod bundle consisted of four vertical 0.25-inch diameter by 24.0 inch long rods arranged in a single row. The tested conditions were: pressure--400 to 2000 psia, mass velocity--250,000 to 4,000,000 lb/hr-ft$sup 2$, and heat flux (uniform)--up to 1,600,000 Btu/hr-ft$sup 2$. The observed two-phase flow patterns were bubble flow, froth flow, slug flow, and annular flow. The flow patterns were mapped at constant pressure on plots of mass velocity versus flowing quality. (auth)

• Research Organization: Bettis Atomic Power Lab., West Mifflin, Pa. (USA)
• NSA Number: NSA-33-008728
• OSTI ID: 4129022
• Report Number(s): WAPD-TM--1199
• Country of Publication: United States
• Language: English

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