Subject	Physics
Specific subject area	Fluid mechanics
Type of data	Tables (csv format); Raw, Filtered data; Code & Scripts.
Data collection	A total of 9 simulation runs are acquired through high fidelity direct numerical simulations (DNS). The numerical domain represents an upper-ocean cubic region based on homogeneous isotropic turbulence, along with a bidisperse mixture of point particles representing microplastics and biogenic material. The adopted mesh ensures full resolution of all turbulent scales, and the particle sizes align with literature data. The dataset includes the instantaneous flow velocity field over time, as well as the positions and velocities of the particles. Additionally, the aggregates are computed as a post-process.
Data source location	Dept. Fluid Mechanics, Barcelona East School of Engineering, Universitat Politècnica de Catalunya ‧ BarcelonaTech (UPC), Barcelona, Spain
Data accessibility	Repository name: Figshare+ Data identification number: https://doi.org/10.25452/figshare.plus.25498372 Direct URL to data: https://plus.figshare.com/articles/dataset/ Distribution_and_Aggregation_of_Microparticles_in_Upper-Ocean_Turbulence_Dataset/25498372 Instructions: Data are openly accessible and available for download
Related research article	None