Steam interfacial condensation in a core makeup tank was simulated using the
code RELAP5/MOD3 version 8.0 to predict the violent pressure oscillation phenomena
in a core makeup tank. Six base cases were carried out to study the effects of back
pressure and of vacuum conditions produced in the core makeup tank by rapid steam
condensation. The effect of varying the liquid conduction thermal layer thickness was
studied. In addition, the code's ability to predict condensation heat transfer was
evaluated.
Violent pressure oscillations were found in the early period of a transient. The
violent pressure oscillations had no effect on the total amount of injection water from
core makeup tank. The conduction thermal layer thickness was found to only effect
the liquid temperature history. The current version of RELAP5/MOD3 was found to
be incapable of dealing with the condensation heat transfer problem in which the
volume liquid temperature is lower than the temperature of the heat structure which is
connected to that hydraulic volume. / Graduation date: 1994
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/37565 |
| Date | 13 December 1993 |
| Creators | Ma, Chang Chun |
| Contributors | Reyes, Jose N. Jr |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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