A Numerical Investigation of Turbulent Interchange Mixing of Axial Coolant Flow in Rod Bundle Geometries

This article is concerned with modeling turbulent interchange mixing within rod bundle arrays. Using a three-dimensional numerical solution, the characteristics and appropriateness of an isotropic κ–∊ turbulence model were investigated by comparing code predictions with experimental results. A novel methodology for solving for the fluid temperature field was also developed. Application of this methodology resulted in significant savings in …