Correlation for phase separation in a tee
Interest in phase separation in tees has been recently stimulated by the possibility of small break loss-of-coolant accidents in pressurized water reactor piping which joins with the primary coolant loop. The flow through a rupture in such a pipe or piping component, such as a valve, is similar to the flow out the side port of a tee. The flow of two-phase fluid through a tee exhibits phase separation because the steam, having lower momentum than the liquid phase, more easily turns the corner into the side port than the liquid. The correlation for phase separation in a tee was developed by simplification of the physical laws which describe the phenomena, and by inclusion of modified density terms which contain an experimentally determined exponent. The model formulates the fluid density in the side port of a tee as a function of upstream densities and void fraction.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 5962912
- Report Number(s):
- CONF-810307-1; ON: TI85004748
- Country of Publication:
- United States
- Language:
- English
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ACCIDENTS
CONTROL EQUIPMENT
EQUIPMENT
FLOW MODELS
FLOW REGULATORS
FLUID FLOW
JOINTS
LOSS OF COOLANT
MATHEMATICAL MODELS
PIPE JOINTS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR SAFETY
REACTORS
SAFETY
TWO-DIMENSIONAL CALCULATIONS
TWO-PHASE FLOW
VALVES
VOID FRACTION
WATER COOLED REACTORS
WATER MODERATED REACTORS