We investigate how the often ignored Basset history force alters inertial particle motion in a steady Taylor-Green vortex. High-resolution simulations integrate the full Maxey-Riley-Gatignol equation with an efficient RK-XTD scheme and compare the results with a Stokes-only variant that omits the non-local Basset term. Trajectories are tracked to nondimensional time T = 150 across a broad Stokes number range for light (R = 1.1) and heavy (R = 1000) particles. The history force removes the permanent vortex trapping predicted by simplified models and measurably reshapes dispersion at T = 150, with sensitivity to both density ratio and inertia. For many cases, paths remain intricate yet non-trapped, diverging markedly from Stokes-only behaviour. The results demonstrate that retaining the Basset force is essential for reliable forecasts of particle distribution over finite timescales.
Zoom link: https://icts-res-in.zoom.us/j/93338316562?pwd=4THobMblbzeTVyyIzfbtdUuw926Owg.1
Meeting ID: 933 3831 6562
Passcode: 202030