Computational Investigation of shearer movement and drum rotation effects on airflow and methane dispersion in longwalls using integrated dynamic and overset meshing July 1, 2025 S Sadeghi S Aminossadati M Kizil C Leonardi Advanced Computational Fluid Dynamics (Cfd) Integrated Dynamic and Overset Meshing Techniques Mine Ventilation Real-Time Gas Monitoring Shearer Operation Shearer Translational Movement and Cutting Drums Rotation Publications