colebrook	colebrook
darcyweisbach	darcyweisbach
dens	waterprops
dvisc	waterprops
kvisc	waterprops
manningc	manningc
manningt	manningt
moody	moody
reynolds_number	colebrook
spec_energy_trap	spec_energy_trap
velocity	colebrook
waterprops	waterprops
xc_circle	xc_circle
xc_trap	xc_trap
