Abstract: Disk-shaped particles are widely found in nature and industrial environments. Existing literature lacks a comprehensive study on drag models for disk-shaped particles applicable to industrial application scenarios. To expand the applicability of the existing model, this paper investigates the drag coefficients and flow characteristics of disk-shaped particles in a flow field based on particle-resolved direct numerical simulation (PR-DNS).The OpenFOAM-body-fitted mesh method is adopted to calculate the drag coefficient of disk-shaped particles with low aspect ratios (0