Why a Rougher Ball Flies Farther — The Drag Crisis and Boundary-Layer Separation
·5 min read
The cliff-like drop in $C_D$ called the drag crisis, and the separation behind it
When the Stream Breaks — Reynolds' Critical Number and the Layered Turbulent Boundary
·7 min read
Where laminar flow falls apart, and how the turbulent boundary stacks itself in three sublayers