A new approach to designing reduced scale thermal-hydraulic experiments |
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Authors: | Celso M F Lapa Paulo A B de Sampaio Cludio M N A Pereira |
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Affiliation: | Divisão de Reatores—SETER, Instituto de Engenharia Nuclear—CNEN, Cidade Universitária s/n, P.O. Box 68550, Rio de Janeiro 21945-970, RJ, Brazil |
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Abstract: | Reduced scale experiments are often employed in engineering because they are much cheaper than real scale testing. Unfortunately, though, it is difficult to design a thermal-hydraulic circuit or equipment in reduced scale capable of reproducing, both accurately and simultaneously, all the physical phenomena that occur in real scale and operating conditions. This paper presents a methodology to designing thermal-hydraulic experiments in reduced scale based on setting up a constrained optimization problem that is solved using genetic algorithms (GAs). In order to demonstrate the application of the methodology proposed, we performed some investigations in the design of a heater aimed to simulate the transport of heat and momentum in the core of a pressurized water reactor (PWR) at 100% of nominal power and non-accident operating conditions. The results obtained show that the proposed methodology is a promising approach for designing reduced scale experiments. |
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