Abstract
A direct numerical simulation approach was employed along with a Lagrangian particle tracking technique to investigate dilute particle motion and dispersion in a horizontal turbulent boundary layer (Re τ = 270) with no streamwise pressure gradient. Particle inertias based on inner Stokes numbers St + (based on friction velocity) ranging from 10 -2 to 10 2 were investigated. The particles were injected near the wall at a height of four wall units (with elastic wall collision specified at one wall unit), and the terminal velocity was kept small so that particle-eddy interaction would be the primary dispersion
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