Measurement of two-phase flow momentum with force transducers
Abstract
Two strain-gage-based drag transducers were developed to measure two-phase flow in simulated pressurized water reactor (PWR) test facilities. One transducer, a drag body (DB), was designed to measure the bidirectional average momentum flux passing through an end box. The second drag sensor, a break through detector (BTD), was designed to sense liquid downflow from the upper plenum to the core region. After prototype sensors passed numerous acceptance tests, transducers were fabricated and installed in two experimental test facilities, one in Japan and one in West Germany. High-quality data were extracted from both the DBs and BTDs for a variety of loss-of-coolant accident (LOCA) scenarios. The information collected from these sensors has added to the understanding of the thermohydraulic phenomena that occur during the refill/reflood stage of a loss of coolant accident (LOCA) in a PWR.
- Publication:
-
Presented at the International Symposium on Gas-Liquid Two-Phase Flows in Conjunction with the Winter Annual Meeting of ASME
- Pub Date:
- 1990
- Bibcode:
- 1990gltp.sympQ..25H
- Keywords:
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- Flow Measurement;
- Flow Velocity;
- Fluid Flow;
- Pressure Vessels;
- Strain Gages;
- Thermodynamics;
- Transducers;
- Two Phase Flow;
- Calibrating;
- Data Processing;
- Dynamic Characteristics;
- Electric Bridges;
- Fabrication;
- Heat Transfer;
- Interfaces;
- Momentum;
- Sensitivity;
- Thermal Shock;
- Velocity;
- Fluid Mechanics and Heat Transfer