Mechanistic investigation of granular organic fertilizer discharge performance in a concentric twin-shaft screw assembly using DEM

Key Points

• Discharge performance improves with specific design modifications of the screw assembly, leading to more efficient usage.
• The study highlights a granular organic fertilizer discharge rate of up to 90% under optimized conditions.
• Observational analysis using discrete element method provides insights into material flow behavior within the assembly.
• Findings indicate that improving discharge mechanisms may enable better utilization of organic fertilizers in agricultural practices.