Abstract: Numerical studies were conducted on the hydrodynamics of a freely falling rigid sphere in bounded and unbounded water domains to investigate the drag coefficient, normalized velocity, pressure coefficient, and skin friction ...

Abstract: In this study, coal samples with different moisture contents were prepared using a drying and humidification system. Coal samples were placed in a crucible and ignited using a heating wire, to which power was applied during ...

Abstract: Convergent-divergent (C-D) riblets represent a pioneering rough surface inspired by the skin of fast-swimming sharks and flight feathers of the birds. In this study, we applied convergent-divergent riblets to the outer ...