Effect of turbulence on nonlinear sloshing in a rectangular pool

Uzawa, Ken

To prevent anomalous events of equipment and structures in a spent fuel pool from occurring, it is essential to comprehend overflow of water and fluid pressure caused by sloshing. For this purpose, it is necessary to quantitatively evaluate turbulent dissipation near water surface and inner structures instead of an empirical value which depends on size of each pool. In this research, we test the efficacy of turbulence models by performing numerical simulation of sloshing in a rectangular pool to evaluate turbulent dissipation based on action mechanism. A conservation equation of turbulent kinetic energy of LES model is derived and compared contributions turbulent dissipation terms to the kinetic energy. I demonstrated that the reproducibility of turbulence near wall in the Large Eddy Simulation is the best.