Apparatus for monitoring two-phase flow
- Oak Ridge, TN
- Gaithersburg, MD
A method and apparatus for monitoring two-phase flow is provided that is particularly related to the monitoring of transient two-phase (liquid-vapor) flow rates such as may occur during a pressurized water reactor core blow-down. The present invention essentially comprises the use of flanged wire screens or similar devices, such as perforated plates, to produce certain desirable effects in the flow regime for monitoring purposes. One desirable effect is a measurable and reproducible pressure drop across the screen. The pressure drop can be characterized for various known flow rates and then used to monitor nonhomogeneous flow regimes. Another useful effect of the use of screens or plates in nonhomogeneous flow is that such apparatus tends to create a uniformly dispersed flow regime in the immediate downstream vicinity. This is a desirable effect because it usually increases the accuracy of flow rate measurements determined by conventional methods.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 4009614
- OSTI ID:
- 862771
- Country of Publication:
- United States
- Language:
- English
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monitoring
two-phase
flow
method
provided
particularly
related
transient
liquid-vapor
rates
occur
pressurized
water
reactor
core
blow-down
essentially
comprises
flanged
wire
screens
similar
devices
perforated
plates
produce
desirable
effects
regime
purposes
effect
measurable
reproducible
pressure
drop
screen
characterized
various
monitor
nonhomogeneous
regimes
useful
tends
create
uniformly
dispersed
immediate
downstream
vicinity
increases
accuracy
rate
measurements
determined
conventional
methods
flow regime
two-phase flow
water reactor
pressurized water
conventional methods
flow rates
pressure drop
flow rate
reactor core
uniformly dispersed
phase flow
perforated plates
monitoring two-phase
essentially comprises
wire screen
wire screens
uniformly disperse
perforated plate
rate measurements
similar device
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