A New Coupled CFD/Neutron Kinetics System for High Fidelity Simulations of LWR Core Phenomena: Proof of Concept

<table>Comparison of the local moderator density evolution for axial heights in the <svg height="11.6" id="M10" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.375 11.6" width="12.375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.537)"><path d="M698 636l-541 -596q60 -5 176 -5q91 0 138.5 5t69.5 24q44 36 85 124l29 -15q-38 -125 -64 -173h-559l-9 16l545 598h-182q-81 0 -109 -8t-48 -31q-26 -29 -55 -103l-29 3q23 86 42 200h22q11 -16 21 -20.5t34 -4.5h428z" id="x1D44D"></path></g>
</svg> direction (3.63 m) predicted by DYNSUB and NHESDYN using two resolutions (R1 and R2).</table>

Science and Technology of Nuclear Installations

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Figure 21

Figure 21: A New Coupled CFD/Neutron Kinetics System for High Fidelity Simulations of LWR Core Phenomena: Proof of Concept 