A method for modeling under-expanded jets

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Date

2012-12

Authors

Day, Julia Katherine

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Abstract

In nuclear power plants, a pipe break in the cooling line releases a jet that damages other equipment in containment, and is known as a loss of coolant accident (LOCA). This report specifically focuses on boiling water reactor (BWR) applications as a guide for future studies with pressurized water reactors (PWRs). This report presents a methodology for characterizing the jet such that, given a set of upstream conditions, the pressure field and damage potential of the jet can be predicted by an end user with a minimum of computation. The resultant model has many advantages over previous models in that it is easily calculated with knowledge readily available to plant operators and it provides new metrics that allow for a quick and intuitive understanding of the damage potential of the jet.

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