Aerosol Transport – Inertia

:: Section 3

Newton's Resistance Law and Stokes's Law

III. Drag Coefficient in Different Flow Regimes

Here, the C_D in different flow regimes is summarized in the chart below.

1. Newton's Law: mainly applicable to the turbulent regime (Re_p > 1000), where viscous forces are negligible compared to inertial forces.

2. Stokes's Law: valid in the laminar flow regime (Re_p < 1), where inertial forces are negligible compared to viscous forces.

3. Transition region: between the laminar and turbulent flow regime.