Qi Chang, Shengbin Di
Particle-resolved direct numerical simulation of a 4-baffled cylindrical stirred tank with a 6-pitched blade-turbine-downflow (PBTD) impeller was carried out for the first time to understand the hydrodynamic characteristics of its turbulent solid-liquid flow. The fluid-particle and fluid-wall interactions are numerically described by the immersed boundary method (IBM) with smeared and sharp interfaces jointly on a staggered Cartesian grid. The particle diameter is 1 mm, and the impeller rotation speed changes between 23.88 and 15.88 rev/s, resulting in the impeller Reynolds number at 7031 and 4676, respectively. This study provides insights into the dynamics of turbulent flow in stirred tanks, emphasizing the role of particles in enhancing global circulation and leading to a better overall drag correlation based on the DNS data.
@article{9875d242-9e17-4a03-a670-e14b4ef71733,
title={Direct numerical simulation of turbulent},
author={Qi Chang and Shengbin Di},
year={2026},
language={en}
}TY - JOUR TI - Direct numerical simulation of turbulent AU - Qi Chang AU - Shengbin Di PY - 2026 LA - en ER -
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