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Reduced Enrichment for Research and Test Reactors
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2006 International RERTR Meeting

Abstracts and Available Papers Presented at the Meeting

Analyses of Flow Excursion Experiments Relevant
to Research Reactors: Revisited

A. P. Olson
RERTR Program, Nuclear Engineering Division, Argonne National Laboratory
9700 S. Cass Avenue, Argonne, IL 60439, USA


The margin to flow instability is an important measure for safe operation of research reactors. The PLTEMP/ANL V3.1 code now includes two correlations for predicting onset of excursive-flow instability that are based on flow instability experiments by Whittle and Forgan, and by M. Siman-Tov et al. The Siman-Tov test data, from the ANS Thermal-Hydraulic Test Loop at ORNL, cover power and flow conditions appropriate to high-powered research reactors. Both groups of experimentalists conducted a broad range of electrically heated single channel experiments over pressure, heat flux, coolant velocity, inlet temperature, and channel geometry relevant to research reactor conversion studies. This paper reports on computer simulation of many of these experiments in order to validate the methods used to predict onset of flow instability in the PLTEMP/ANL V3.1 code. The Whittle and Forgan data is statistically analyzed to find an appropriate bound for the flow instability parameter, η.

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Dr. Jordi Roglans-Ribas
Technical Director, RERTR Department
Nuclear Engineering Division 362
Argonne National Laboratory
9700 South Cass Avenue
Argonne, IL 60439
Fax:  +1 630-252-5161

2016 RERTR Meeting

The 2016 International RERTR Meeting (RERTR-2016) will take place in Belgium. Stay tuned for further details.

2015 RERTR Meeting

The 2015 International RERTR Meeting (RERTR-2015) took place in Seoul, Korea on Oct. 11-14, 2015.
For more information visit RERTR-2015.


ARGONNE NATIONAL LABORATORY, Nuclear Engineering Division, RERTR Department
9700 South Cass Ave., Argonne, IL 60439-4814
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Last modified on July 29, 2008 15:16 +0200