Page 209 - Introduction to Naval Architecture
P. 209
RESISTANCE 195
6
2
If the kinematic viscosity for fresh water is 1.139 X 10~ m /s and
6 2
that for sea water is 1.188 X 10~ m /s, the Reynolds' numbers can
he calculated for model and ship.
Schoenherr
3 3
The values of Q for model and ship are 3.172 X 10~ and 1.553 X 10~
respectively. Now:
This makes no allowance for roughness. The usual addition for this to Q
is 0.0004. This would give a C^ of 0.003 317 and the resistance would be
334100 N.
TTTC correlation line
This gives:
which yields:
