Work

Imprints of turbulence on heterogeneous deposition of adhesive particles

Year: 2025

Type: article

Abstract: We present results from direct numerical simulations of turbulent channel flow laden with adhesive (viscoelastic) particles. Particles demonstrate higher adhesion strengths at elevated temperatures, an effect we probe by varying the adhesion number. Using spanwise radial distribution functions, we show that particle heterogeneity near and on the wall is promoted by turbulence. Furthermore, low-adhesion, high-inertia particles demonstrate spanwise creep along the wall, leading to elongated streamwise deposits. Abrasive wear profiles highlight the consequences of heterogeneity, with local wear exceeding ten times the mean.

Source: Physical Review Fluids

DOI: 10.1103/st77-8gqx

Authors: Max Herzog, Jesse Capecelatro

Institution: University of Michigan

Language: English

Topic: Particle Dynamics in Fluid Flows

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, University of Michigan, Office of Naval Research

Awards: Collaborative Research: Effect of Pulsatility on Expiratory Droplet-Laden Flows, G582071524