Liquid carry-over and entrainment in air-water countercurrent flooding. Final report

Technical Report · Thu Apr 01 04:00:00 EST 1982

OSTI ID:5274820

Lee, H M; McCarthy, G E; Tien, C L

Two-phase countercurrent flows of air and water were run in single-tube and contraction plate-in-tube test sections. Results include data for liquid carry-over rates from 0 to 90% of the liquid injection rates. Flow regimes are described. For these tests, flooding was defined as the onset of significant liquid carry-over (2% or more of the liquid injection rate). The effects of the following parameters were investigated: contraction plate-in-tube tests (number of holes in plate, wetted perimeter of flow path, liquid surface tension, bottom spray of liquid drops, upper liquid injection rate, distance from plate to carry-over drain, and flow area through contraction plate) and single-tube tests (bottom spray of liquid drops and upper liquid injection rate). Analytic work included a new flooding model that predicts not only the onset of flooding but also the liquid carry-over rate from 0 to 70% of the liquid injection rate for contraction plate tests. For the single-tube tests, the top flooding flow regime was analyzed and a prediction for the onset of top flooding was obtained. In each model, experimental data are required to evaluate two constants in the prediction equations.

• Research Organization: California Univ., Berkeley (USA). Dept. of Mechanical Engineering
• OSTI ID: 5274820
• Report Number(s): EPRI-NP-2344; ON: DE82903856
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
AIR
BWR TYPE REACTORS
FLUID FLOW
FLUIDS
GASES
HYDROGEN COMPOUNDS
LOSS OF COOLANT
OXYGEN COMPOUNDS
PLATES
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTORS
TUBES
TWO-PHASE FLOW
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS