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Scaling Laws for Modeling Nuclear Reactor Systems

Amir N. Nahavandi, Frank S. Castellana, Edick N. Moradkhanian

Nuclear Science and Engineering

Volume 72 / Number 1 / October 1979 / Pages 75-83


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Scale models are used to predict the behavior of nuclear reactor systems during normal and abnormal operation as well as under accident conditions. Three types of scaling procedures are considered: time-reducing, time-preserving volumetric, and time-preserving idealized model/prototype. The necessary relations between the model and the full-scale unit are developed for each scaling type. Based on these relationships, it is shown that scaling procedures can lead to distortion in certain areas that are discussed. It is advised that, depending on the specific unit to be scaled, a suitable procedure be chosen to minimize model-prototype distortion.

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