文档介绍：Problem Set 12 Name: ____________________
Assigned: Tuesday, November 20
Due: Tuesday, November 27
1. Supplementary Problem Va25
2. Marine Hydrodynamics (JNN), Problem . Indicate whether quantities will increase
or decrease and explain why. Assume a turbulent boundary layer.
=
3. The total resistance of a ship of length Ls 200 m moving at a design speed of
= =
U s 10 m/s is to be estimated using a model of length Lm 2 m. The total wetted
= 4 2
surface area of the ship is S s 10 m . For this problem, assume that the properties of
the fluid in the towing tank and the ocean are the same and given by ρ= 1000 kg/m3 and
−
ν= 10 6 m2/s. Useg = 10 m/s2. Ignore any roughness corrections.
=
(a) If the total drag on the model for the design condition is Dm 10 N, find the total
resistance Ds of the prototype ship at design speed. Use