🌬️ Wind Tunnel Simulator: Airfoil Lift, Drag, Smoke Streaks and Pressure Taps - 2D Airfoil Section, Streamlines and Cp

2D companion of the wind-tunnel lab: a NACA 4-digit airfoil section with live Hess-Smith panel-method streamlines, smoke, surface pressure coefficient distribution and a lift polar against thin-airfoil theory.