Why does it follow the curvature rather than separating? Its not due to the coanda effect as the accelerated flow near the surface of the aerofoil can't be considered a jet. It's not due to surface tension because there is no interface between two fluids. I know the flow of a fluid is due to pressure, inertial and viscous effects.
- Is it due to viscous effects on fluid particles in the boundary layer?
- Is is due to the pressure normal to the surface of any body submerged in a fluid?
- Another reason?
Thanks for your answers!