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Aerosol Transport – Inertia


:: Section 3

Newton's Resistance Law and Stokes's Law

III. Drag Coefficient in Different Flow Regimes
  Section Contents

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

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

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

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