The topic of this thesis is to discuss an
investigation made for a fluid velocity measuring device.
The OSU thermal hydraulic testing facility is interested
in using a small probe to measure fluid velocities in the
annular region of a model nuclear reactor vessel. A
heater with a thermocouple embedded into the center of
the heated region was considered for this application.
The philosophy of using such a device is as follows.
The temperature of the heater would be monitored closely.
Power fed to the heater would be modulated to keep the
temperature of the heater constant. The flow of water
passing across the heater would draw more or less heat
from the heater. The power used can then be related
directly to the velocity of the water.
Data for this type of experiment was taken in the
summer of 1992. A mathematical model to describe the
velocity probe behavior was developed to examine this
type of application in different situations. The data
was used to test the adequacy of the model.
Analysis of the experimental data show this system
is good for measuring steady state systems but is
sluggish during large changes in system flow velocity.
Results from the numerical model showed that it is has
good results predicting steady state data but exhibits
difficulty in reproducing hysteresis effects. / Graduation date: 1994
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/35643 |
| Date | 09 February 1994 |
| Creators | Franz, Scott C. |
| Contributors | Reyes, Jose N. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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