Simulation study of the influence of the spacer grid on thermal-hydraulic characteristics in the rod bundle channel

Key Points

• Thermal-hydraulic characteristics are significantly influenced by spacer grid design in rod bundles, affecting channel flow dynamics.
• The simulation results show that varied spacer grid configurations lead to different thermal performance metrics, indicating optimal designs.
• Simulation approach utilized to analyze how spacer grid alters heat transfer and fluid flow within rod bundles, improving thermal efficiency.
• These findings highlight the importance of spacer grid optimization in reactor design for enhanced thermal-hydraulic performance.