PWR熱水力設計におけるグリッドスペーサモデルの高度化(原子炉伝熱流動解析の革新(3),原子炉伝熱流動解析の革新)

概要

論文の詳細を見る
Mixing vanes located on the top of the grid spacers have very important roles in the thermal hydraulics performance of the PWR fuels. They had been treated simply as the resistances in the axial direction and/or isotropic diffusion promoters in the conventional subchannel analyses models, while they might cause the large scale forced cross flows in the rod bundle. In this paper, we describe the improved treatment of the mixing vanes in the subchannel analysis. It makes the prediction of the crossflow effect in the bundle more physical and points out the potential margins of conventional design methods.
2004-09-04