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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"CANDU Pressure Tube"”.
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Computational fluid dynamic investigations of flow through an aged CANDU pressure tube
… fluid dynamics simulations of twelve simplified CANDUTM 37M fuel bundles sitting in both as-received and aged pressure tubes were performed with Hydra in this work. The predicted coolant flow behaviour of two cases were compared in order to investigate the impact of pressure tube deformation (sag …
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Improved 3D modelling of CANDU reactors using transport-fitted diffusion coefficients
… the neutronic physics behavior of the core in CANDU pressure tube type heavy water reactors with natural-uranium fuel, two levels of calculations are required. Initially, lattice-level transport calculations are carried out to obtain, with high detail and accuracy, the flux distribution inside …
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Microstructure-informed modeling of hydrogen diffusion in zirconium polycrystals
… concerns regarding the integrity of nuclear pressure tubes. This thesis uses a crystal plasticity finite element model coupled with diffusion equations to study the effects of localized deformation at the grain scale on the hydrogen diffusion and hydride precipitation in zirconium. Attention …
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Effect of ion irradiation on the rate dependence of plastic deformation of extruded Zr-2.5%Nb
… thesis is to examine the properties of Zr-2.5%Nb pressure tube material in the transverse direction. Through testing at room temperature, material properties such as the strain hardening, strain rate sensitivity and apparent activation volume were investigated. The effects of Zr+ ion-implantation …
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Predicting the Influence of Hydrogen on Zirconium
… with the heavy water used as coolant in the CANDU® reactors results in the production of hydrogen or deuterium. Some of this hydrogen enters the alloy and causes a gradual increase in the total hydrogen concentration from the initial average hydrogen concentration during fabrication. In …