Two drag laws, one derived and one fitted
Flat-plate drag coefficient against Reynolds number, laminar and turbulent, on log axes. The laminar curve is Blasius' similarity solution, solved by shooting; the turbulent one is the 1/7-power correlation, which was fitted to experiment and is drawn dashed-in-kind to keep the difference visible. Their slopes differ — −1/2 against −1/5 — so the gap between them widens rather than staying put.
7 essays call
plate-friction. The drawing above is what it returns with no arguments at all; every
call below passes it something, because a placement that passes nothing draws whichever member
of the family the generator happens to default to rather than the one its essay argues about.
It is also the blast radius. Changing plate-friction changes every figure listed here
at once, and on this site it may change what they assert as well as what they show —
which is what has to be rebuilt and looked at before the change is believed.
Where it is called
What each of these essays asks for instead of the defaults is on the regime index, which reads the parameters back out of the finished figures rather than out of the placements.
- The solutions stop being chosen Transition and turbulence
- The number that is not a number Transition and turbulence
- The roughness a wall cannot feel Fluids at work
- The cost of going turbulent Viscosity
- The layer that stops growing Viscosity
- Every mode decays and it grows anyway Transition and turbulence
- A limit nothing reaches Regimes and numbers